YZ125

The 1985 Yamaha YZ125 is a highly regarded motocross motorcycle, celebrated for its potent liquid-cooled 2-stroke engine and agile handling. This model, with its chassis code 4SS and engine code 4SS, represented a significant step in 125cc motocross technology, featuring a 6-speed transmission, wet multiple-disc clutch, and advanced Monocross rear suspension. Known for strong mid-range power and responsive performance, it competed directly with other leading machines of its era. The YZ125 line boasts a rich heritage in off-road racing, with Yamaha consistently pushing innovation in the sport.

The Yamaha YZ125 is a performance-oriented motocross motorcycle, first introduced in the 1970s and continuously refined, with the 1987 model representing a significant iteration in its competitive lineage. Known for its lightweight design, agile handling, and potent 123cc two-stroke engine, the YZ125 is engineered for the demanding environment of off-road competition. Its robust build and extensive motorsports heritage ensure reliability and a strong performance envelope, making it a favored choice for riders seeking a competitive edge in motocross and similar disciplines. The model's focus on rider control is supported by advanced suspension systems and effective braking, hallmarks of dedication to performance engineering.

The Yamaha YZ125, a 1987 Motocross Motorcycle, is a testament to Yamaha's legacy in off-road performance. Known for its powerful 2-stroke engine, liquid-cooling, and advanced suspension system, this model was a formidable competitor in its class. Its design emphasizes agility and responsiveness, making it a popular choice for riders seeking a competitive edge on the motocross track. The 4SS chassis code signifies a specific iteration of this performance-oriented machine, built for demanding terrain and racing conditions.

This manual covers the YZ125, an off-road motorcycle model produced in 1988. As part of the third generation YZ125, this model is recognized for its lightweight design, agile handling, and strong mid-range power delivery, making it a competitive motocross machine. Its engineering quality is evident in features like the Monocross rear suspension system and advanced reed valve induction, reflecting a commitment to performance and innovation in the competitive motocross arena.

The Yamaha YZ125, produced in 1989, is a high-performance two-stroke motocross motorcycle renowned for its lightweight agility and potent power delivery. Engineered for competitive off-road racing, this model embodies Yamaha's commitment to performance and reliability, building on a distinguished lineage in motorsports. Its advanced suspension systems and robust two-stroke engine were hallmarks of late 1980s motocross technology, making it a formidable contender against competitors like the Honda CR125R, Kawasaki KX125, Suzuki RM125, and KTM 125. The YZ125's design philosophy prioritizes a powerful, responsive ride, essential for navigating demanding motocross tracks.

The 1992 Yamaha YZ125 is a purpose-built motocross and off-road competition machine, representing a significant iteration in Yamaha's renowned YZ lineage. Engineered for performance, this model competed in the highly contested 125cc class, favored for its strong mid-range power and agile handling characteristics, hallmarks of Yamaha's off-road development. With a liquid-cooled, 124cc two-stroke engine featuring reed valve induction and a Mikuni VM28SS carburetor, the YZ125 is designed for aggressive riding and demanding track conditions. Its robust construction and Yamaha's commitment to reliability ensure it remains a capable and enduring platform for enthusiasts and racers alike.

This manual covers the 1993 YZ125, a lightweight and agile motocross machine renowned for its competitive performance. Engineered for off-road racing, the YZ125 features a potent 124cc liquid-cooled, 2-stroke engine, a 6-speed transmission, and advanced suspension systems, including its Monocross rear suspension. Its design prioritizes rider control and agility, making it a formidable competitor in its class, building upon a rich motorsports heritage.

The 1994 Yamaha YZ125 is a performance-oriented motocross motorcycle renowned for its competitive edge in the 125cc class. This model features Yamaha's robust liquid-cooled, 2-stroke engine, delivering exhilarating power through a 6-speed transmission. Its design emphasizes agility and control, incorporating advanced Kayaba suspension components, including 43mm USD front forks and a monoshock rear system, along with powerful hydraulic disc brakes front and rear. Built for racing and demanding off-road use, the YZ125 represents Yamaha's commitment to engineering excellence and its strong legacy in motorsports.

This manual covers the 1995 Yamaha YZ125, a potent single-cylinder, 2-stroke motocross motorcycle designed for off-road competition. Known for its agility and the performance advantages offered by its Yamaha Power Valve System (YPVS), the YZ125 has been a staple in the 125cc motocross class. Yamaha's legacy in motorsports is evident in the engineering quality and reliability of this machine, making it a formidable choice for racers and enthusiasts alike.

This manual covers the 1997 Yamaha YZ125, a 2-stroke motorcycle designed for high-performance off-road riding and competition. Building on Yamaha's extensive history in motorsports, the YZ series, including this 1997 model, is recognized for its potent engine, agile handling, and reliability in demanding motocross environments. It represents a significant evolution in the 125cc class, offering competitive edge through continuous development and a focus on rider performance.

The 1997 Yamaha YZ125 is a high-performance, lightweight, and agile motocross motorcycle renowned for its potent 2-stroke engine and advanced suspension. This model is a staple in Yamaha's motocross lineup, known for its strong power delivery, enhanced by the Yamaha Power Valve System (YPVS), and its ability to deliver superior handling and bump absorption on challenging terrain. Designed for off-road competition, the YZ125 has a legacy of being a strong contender in its class, offering enthusiasts and racers a competitive edge through its engineering quality and reliability.

The Yamaha YZ125 represents a significant lineage in the competitive 125cc two-stroke motocross segment, known for its potent engine and agile chassis. This collection of nine factory service manuals covers models from 1999 through 2006, a period of notable refinement for the YZ125. These manuals provide the most accurate, manufacturer-derived information for maintaining and repairing these high-performance machines, ensuring they deliver optimal performance and longevity. The YZ125 is recognized for its lightweight design and exceptional handling, making it a popular choice for riders seeking a competitive edge.

This manual covers the Yamaha YZ125, an off-road motorcycle produced in 2000. Renowned for its agile handling, powerful two-stroke engine, and strong performance within its class, the YZ125 has a significant legacy in motocross. Its design emphasizes competitive capability, making it a favored choice for both entry-level and intermediate motocross racing. The vehicle features a liquid-cooled, single-cylinder engine with a displacement of 124 cc, a 6-speed transmission, and a robust Deltabox aluminum frame.

The Yamaha YZ125, model code YZ125(M)LC-2000, is an off-road motorcycle designed for motocross and competition. Introduced in 2000, this model is a testament to Yamaha's extensive motorsports legacy, building upon decades of development in the YZ series. It features a potent 124 cm³ two-stroke, liquid-cooled engine with reed valve induction, delivering approximately 37-40 HP. The motorcycle is built around a semi-double cradle steel frame and equipped with advanced suspension systems, including upside-down telescopic forks at the front and a Monocross linkage system at the rear, ensuring agile handling and performance on demanding tracks. Its engineering quality and competitive edge made it a respected machine in its class, directly competing with other prominent 125cc motocross bikes of the era.

This manual covers the Yamaha YZ125, model code YZ125M (LC-2000), from the 2000 model year, part of the Third Generation (1996-2001) lineage. Yamaha has a storied history in motocross, with the YZ line being a cornerstone of their off-road racing success. The YZ125 is renowned for its potent 2-stroke engine and agile handling, representing a refinement focused on enhancing performance and competitiveness in the 125cc motocross class. This model features a 2-stroke, liquid-cooled, single-cylinder engine with a displacement of 124 cm³, a 6-speed transmission, and hydraulic disc brakes front and rear.

This manual covers the YZ125, a motocross motorcycle from the fifth generation (1996-2001) and specifically the 2001 model year, chassis code 4SS1. Known for its competitive performance in the 125cc motocross segment, the YZ125 is engineered for motocross racers and off-road enthusiasts. The long heritage in motocross racing is evident in the YZ125's design, which features a liquid-cooled, 2-stroke engine with reed valve induction, a 6-speed transmission, and a lightweight aluminum frame. This model represents a mature iteration of a lineage celebrated for its agility, strong engine characteristics, and overall capability on the track.

This service repair manual covers the 2001 Yamaha YZ125, a performance motocross motorcycle renowned for its potent two-stroke engine, nimble handling, and competitive performance. As a cornerstone of Yamaha's off-road legacy, the YZ125 has undergone continuous development, with the 2001 model representing a refinement of its generation. Designed for off-road riders and racers, this machine is celebrated for its potent 124cc liquid-cooled, 2-stroke engine, featuring the YZ Power Valve System (YPVS) for optimized power delivery, and a 6-speed transmission. Its engineering emphasizes a lightweight aluminum frame, advanced suspension, and hydraulic disc brakes, making it a formidable competitor in its class.

The Yamaha YZ125, model code YZ125(N)LC, represents a significant iteration in Yamaha's esteemed YZ motocross line. Introduced in 2001, this liquid-cooled, 2-stroke motorcycle, powered by a 124cc engine, is engineered for peak performance on the track. Yamaha's legacy in motocross is built on delivering competitive machines, and the YZ125 is a testament to this, known for its agility, power delivery, and rider-focused design. This model continues the tradition of innovation that has made the YZ series a benchmark in off-road racing.

This official service repair manual and OEM parts catalogue provides comprehensive guidance for the Yamaha YZ125(N)LC-2001. Designed for both the do-it-yourselfer and experienced mechanics, these manuals are an invaluable resource for maintaining the optimal performance and longevity of your Yamaha YZ125. The detailed procedures, accompanied by numerous photos and illustrations, ensure clarity and accuracy in every task.

This manual covers the YZ125, a competition motocross motorcycle produced from 2001 to 2003. Renowned for its nimble handling and potent two-stroke power delivery, the YZ125 has been a staple in the motocross lineup for decades. This generation often featured advanced KYB Speed Sensitive System (SSS) forks, representing a significant technological advancement for its class. Built with a durable aluminum frame and high-performance adjustable suspension, the YZ125 is designed for off-road use and competitive racing.

The 2002 Yamaha YZ125 is a liquid-cooled, 2-stroke motocross motorcycle renowned for its performance and handling in the competitive 125cc class. Featuring a 124cc engine with a 54.0 mm bore and 54.5 mm stroke, it delivers approximately 33-35 horsepower. Its engineering is characterized by a lightweight aluminum alloy frame, fully adjustable Kayaba USD front forks, and a Monoshock rear suspension system, all designed to provide optimal control and rider feedback on challenging terrain. The YZ125's design prioritizes agility and power delivery, making it a favored choice for motocross enthusiasts and racers.

This manual covers the 2002 Yamaha YZ125, a renowned motocross and off-road competition motorcycle. Known for its lightweight design, nimble handling, and potent two-stroke engine, the YZ125 is engineered for performance and rider enjoyment. Its legacy in the 125cc class is built on consistent evolution and a commitment to delivering a thrilling off-road experience, making it a competitive choice against models like the Honda CR125R, Kawasaki KX125, KTM 125 SX, and Suzuki RM125.

This manual covers the 2002 Yamaha YZ125, a renowned motocross motorcycle celebrated for its lightweight design, agile handling, and competitive performance. As a staple in Yamaha's storied YZ series, this model offers a potent 2-stroke, liquid-cooled engine with a displacement of approximately 124cc, delivering impressive power for its class. Engineered for the demands of off-road racing and enthusiast riding, the YZ125 is built with a robust chassis and suspension system designed for optimal control and rider feedback. Its legacy is marked by consistent acclaim in motocross publications, highlighting its value proposition as a machine that balances rider skill with mechanical capability.

The 2003 Yamaha YZ125 is a high-performance off-road motorcycle designed for motocross competition and aggressive trail riding. Building on Yamaha's rich heritage in motorsport, this 124cc liquid-cooled, 2-stroke machine is engineered for agility, power, and reliability. Its robust Deltabox aluminum frame, advanced suspension system, and potent engine deliver a thrilling and competitive riding experience, making it a favored choice for riders seeking peak performance in demanding off-road environments.

This manual covers the Yamaha YZ125, a renowned 2-stroke, liquid-cooled motorcycle produced in 2003. Known for its competitive performance in motocross and off-road riding, the YZ125 is celebrated for its strong powerband, agile handling, and robust construction. Yamaha's extensive legacy in off-road racing is evident in the continuous development of the YZ series, with this model representing a key iteration. The YZ125 is engineered to meet the demands of both recreational riders and aspiring racers, offering a potent combination of speed and maneuverability.

This manual covers the Yamaha YZ125 (model designation YZ125(R)LC) from the 2003 model year. Renowned for its potent 125cc two-stroke engine equipped with the Yamaha Power Valve System (YPVS), this motocross bike has a long-standing heritage in competitive racing. Its design emphasizes agility, performance, and reliability, making it a favored choice for enthusiasts and professional mechanics alike. The YZ125 is built upon a robust Deltabox II aluminum frame, featuring advanced suspension and powerful hydraulic disc brakes for optimal control in demanding off-road conditions.

This manual covers the Yamaha YZ125 motorcycle for the 2003-2004 model years. Renowned for its potent two-stroke engine, agile handling, and racing pedigree, the YZ125 is a highly competitive motocross machine. Its engineering quality and reliability are hallmarks of Yamaha's commitment to performance in the off-road segment. Key features include a liquid-cooled, 2-stroke engine with reed valve induction, fully adjustable front and rear suspension, and hydraulic front and rear disc brakes, all designed to provide riders with optimal control and a thrilling experience.

The 2004 Yamaha YZ125 is a high-performance 125cc two-stroke motocross and off-road motorcycle renowned for its potent engine and nimble handling. Building on Yamaha's extensive legacy in off-road competition, this model features an aluminum perimeter frame and advanced suspension, making it a favored choice for amateur and professional racers, as well as recreational riders. Its design emphasizes agility and power delivery, reflecting Yamaha's commitment to engineering quality and reliability in the demanding world of motocross.

The Yamaha YZ125 (model code YZ125(S)LC, chassis code 4SS) is a highly regarded 125cc two-stroke motocross and off-road competition motorcycle produced in 2004. Known for its potent engine, agile chassis, and lightweight construction, it was designed to excel in demanding off-road environments. This model represents a refinement of Yamaha's long-standing commitment to high-performance off-road machines, competing effectively within its class through advanced features like the Yamaha Power Valve System (YPVS) for optimized power delivery.

The Yamaha YZ125, a prominent model in the 125cc motocross class, represents a significant achievement in off-road motorcycle engineering. Known for its potent 2-stroke, liquid-cooled engine and agile aluminum double cradle frame, the YZ125(S)LC-2004 series offers exceptional performance and handling. Yamaha's extensive heritage in motocross racing is evident in this model, which has consistently garnered positive reviews for its race-proven technology and design. This 2004 iteration is built for demanding off-road use, embodying Yamaha's commitment to reliability and rider-focused performance.

The Yamaha YZ125, a third-generation motocross motorcycle produced in 2005, represents a performance-oriented machine engineered for competition. This model is distinguished by its lightweight chassis, a potent two-stroke engine featuring its Power Valve System (YPVS) for an optimized powerband, advanced suspension components, and a reputation for agile handling. Building on a rich heritage in off-road racing, the YZ125 has consistently evolved, and the 2005 iteration continued this tradition with significant chassis, engine, and suspension refinements, making it a competitive entry in the 125cc class.

The Yamaha YZ125, a renowned motocross motorcycle from 2005, is celebrated for its exceptional agility and potent two-stroke engine. This model features a liquid-cooled, reed-valve inducted engine with the Yamaha Power Valve System (YPVS) for optimized power delivery. It is equipped with advanced Kayaba SSS front forks and a Monoshock rear suspension system, providing superior control and handling on challenging off-road terrain. Designed for competition, the YZ125 emphasizes rider performance and maneuverability, embodying Yamaha's strong heritage in off-road racing.

This manual covers the Yamaha YZ125, model code YZ125(T)T1, from the 2005 production year. The YZ125 is a highly regarded motocross motorcycle, part of Yamaha's renowned YZ lineage, celebrated for its performance, handling, and race-winning heritage. Engineered with a liquid-cooled, 2-stroke engine featuring the Yamaha Power Valve System (YPVS), this model delivers potent power across its broad rev range. Its robust chassis, including advanced front forks and rear suspension, combined with powerful hydraulic disc brakes, ensures exceptional control and agility on challenging terrain. The 2005 YZ125 represents a refined iteration of this performance-focused platform, designed for demanding off-road competition and spirited riding.

This manual covers the Yamaha YZ125(T)T1-2005, a high-performance off-road motorcycle designed for competitive motocross and recreational trail riding. Engineered for agility and power, the YZ125 is renowned for its responsive two-stroke engine and advanced suspension system, providing riders with exceptional control and an exhilarating experience. This model is available for various global markets, including Canada, the U.S.A., South Africa, Europe, Japan, and Oceania, ensuring its widespread availability and support.

The Yamaha YZ125, a high-performance dirt bike and motocross motorcycle, has been a staple in off-road riding and competitive racing since its inception. Known for its agile handling, potent two-stroke engine, and enduring reliability, this model has consistently been a popular choice among riders. The 2005 YZ125 exemplifies Yamaha's dedication to engineering quality, offering a thrilling and responsive riding experience that has cemented its legacy in the motocross world.

This manual covers the 2005 Yamaha YZ125, YZ125T, and YZ125T1 models, renowned competitive motocross motorcycles. Yamaha has a distinguished legacy in motocross, and the YZ line is a testament to their commitment to off-road performance. The YZ125 is celebrated for its agile handling, potent two-stroke powerband, and its ability to compete effectively within the 125cc class. Its engineering emphasizes rider feedback and a lightweight, strong aluminum frame, contributing to its reputation for excellent performance and reliability on the track.

The 2006 YZ125 is a highly regarded motocross motorcycle renowned for its potent two-stroke engine and agile handling. This model, a competitive entry in the 125cc class, features a liquid-cooled 125cc two-stroke engine with its Power Valve System (YPVS), contributing to its strong mid-range power delivery. Its design is further enhanced by an aluminum frame and advanced KYB suspension components, making it a favored choice for riders seeking performance on the track. The extensive heritage in motocross racing underpins the engineering quality and reliability of the YZ125.

The 2006 Yamaha YZ125 is a high-performance off-road motorcycle designed for motocross competition. It features a potent liquid-cooled, 124cc two-stroke engine with the Yamaha Power Valve System (YPVS) for enhanced power delivery across the rev range. Its agile handling is attributed to a lightweight aluminum frame and advanced suspension components, including 295mm of front travel and 300mm of rear travel. This model is part of Yamaha's esteemed YZ lineage, known for its race-winning pedigree and continuous development in two-stroke technology, offering a pure mechanical experience for amateur and professional racers.

This manual covers the Yamaha YZ125W and YZ125W1 motocross competition motorcycles from the 2006 model year. Renowned for its high-revving two-stroke engine, advanced Kayaba suspension, and lightweight aluminum frame, the YZ125 is engineered for performance and agility. Its potent powerband and responsive handling make it a formidable machine for enthusiasts, amateur racers, and competitive riders. Yamaha's long heritage in off-road racing is evident in the continuous development of the YZ line, with the 2006 model representing a refined iteration built upon decades of research and racing feedback.

This manual covers the Yamaha YZ125, a 2007 model motocross motorcycle renowned for its lightweight chassis, potent 2-stroke engine, and advanced suspension. Designed for performance off-road competition, this model benefits from Yamaha's extensive heritage in motocross racing, offering class-leading performance and durable construction. Its agile handling and responsive power delivery make it a favored choice for riders and racers seeking a competitive edge on the track or challenging trails.

This manual covers the 2007 Yamaha YZ125, including the YZ125W and YZ125W1 variants. Yamaha has a long-standing reputation for producing high-performance off-road motorcycles, and the YZ125 has been a staple in its lineup for decades, continuously refined to offer competitive performance. The 2007 model represents a significant iteration with chassis and engine updates, featuring a liquid-cooled, 2-stroke engine with a displacement of 124 cc and a 6-speed transmission. Its design emphasizes agility and power delivery, making it a capable machine for motocross and competition.

The Yamaha YZ125, model year 2007, is a high-performance motocross and off-road competition motorcycle renowned for its potent 125cc two-stroke engine, featuring the Yamaha Power Valve System (YPVS) for optimized power delivery. This model is equipped with advanced Kayaba Speed Sensitive System (SSS) front forks and a Kayaba rear shock, contributing to its exceptional handling and control in demanding riding conditions. Building on Yamaha's strong legacy in off-road racing, the 2007 YZ125 represents a refined iteration designed for competitive success, offering a lightweight and agile platform for riders.

The 2007 Yamaha YZ125 is a distinguished 125cc two-stroke motocross motorcycle, celebrated for its exceptionally lightweight aluminum frame, potent liquid-cooled engine, and remarkably agile handling. Designed for the competitive motocross arena, it offers a rider-focused experience with advanced features such as adjustable suspension components and a powerful braking system. Yamaha's heritage in racing is evident in the YZ125's continuous development, making it a reliable and tunable machine for riders of all skill levels.

The 2007 Yamaha YZ125 represents a continuation of Yamaha's strong heritage in motocross, building upon the third-generation YZ platform. This model, known for its chassis refinement and engine tuning, is designed for performance and reliability in competitive off-road riding. Key features include a liquid-cooled, 2-stroke engine with a displacement of 124 cm³, a 6-speed transmission, and the advanced YPVS (Yamalube Power Valve System) for optimized power delivery. Its aluminum alloy semi-double cradle frame and hydraulic disc brakes contribute to its agile handling and stopping power, making it a respected machine in its class.

The Yamaha YZ125 is a distinguished off-road motorcycle, specifically engineered for motocross competition. Produced for the 2008 model year, this 124 cc, 2-stroke, liquid-cooled machine is renowned for its agile handling, potent engine performance, and advanced suspension systems, including the highly regarded Kayaba SSS components. Its robust aluminum twin-spar frame provides a solid foundation for demanding off-road riding, making it a favored choice for riders seeking a competitive edge. The YZ125 embodies Yamaha's long-standing heritage in motorsport, offering a pure, performance-oriented riding experience.

The 2008 Yamaha YZ125 is a high-performance motocross motorcycle engineered for off-road competition. Building on Yamaha's extensive racing heritage, this model features a potent 124cc liquid-cooled, two-stroke engine equipped with the Yamaha Power Valve System (YPVS) for enhanced power delivery across a broad RPM range. Its lightweight aluminum bilateral beam frame, combined with advanced Kayaba Speed-Sensitive System front forks and a Monoshock rear suspension, provides exceptional handling, control, and rider maneuverability. Notable features include strong hydraulic disc brakes, aggressive styling, and a focus on rider ergonomics for demanding competitive environments.

The 2008 Yamaha YZ125, model designation YZ125(X)X1, is a liquid-cooled, 2-stroke motocross motorcycle renowned for its performance and agility. Building on Yamaha's extensive racing heritage, this model offers a potent 124 cm³ engine and a robust chassis designed for competitive off-road riding. Key features include Yamaha's Power Valve System (YPVS) for enhanced power delivery, an upside-down telescopic front fork, and a link-type rear suspension system, all contributing to its reputation for reliability and handling prowess in demanding motocross environments.

The 2008 YZ125, often associated with chassis codes like 5XC, is a performance-oriented motocross motorcycle renowned for its agility and power. This model represents a specific iteration in the long and successful lineage of the YZ line, a staple in the motocross world. Engineered for off-road competition, the YZ125 features a liquid-cooled, 125 cc two-stroke engine with a reed valve and a Power Valve System (YPVS), delivering approximately 37-40 horsepower. Its construction includes a rigid aluminum frame and hydraulic disc brakes for responsive handling and stopping power, making it a competitive choice for enthusiasts.

The 2009 Yamaha YZ125 is a highly regarded off-road motorcycle designed for motocross and competition. Known for its potent 125cc liquid-cooled two-stroke engine, agile handling, and advanced suspension, the YZ125 has a long-standing reputation for performance and reliability in its class. Its engineering focuses on delivering a competitive edge for both enthusiast and amateur riders, embodying a commitment to racing excellence. This model continues the legacy of the YZ line, a staple in motocross racing for decades, recognized for its consistent performance and rider-focused design.

The Yamaha YZ125, a 2009 model, is a high-performance off-road motorcycle renowned for its lightweight, nimble chassis and potent 2-stroke engine. Engineered for motocross and aggressive off-road riding, it delivers strong mid-range and top-end power, complemented by a tunable suspension system. Yamaha's legacy in motorsports is evident in the YZ125's reliable performance and competitive spirit, making it a favored choice among riders and racers seeking a thrilling and capable machine.

The 2009 Yamaha YZ125 is a high-performance, competitive 125cc two-stroke motocross motorcycle renowned for its potent engine, agile handling, and robust suspension. It represents a staple in its class, built upon Yamaha's extensive legacy in off-road racing. This model is engineered for motocross racers and off-road enthusiasts seeking an exceptional riding experience and is designed for demanding competitive use.

This manual covers the 2009 Yamaha YZ125, a highly regarded 2-stroke, liquid-cooled, single-cylinder motocross motorcycle. Known for its lightweight aluminum alloy frame, potent 124 cm³ engine, and advanced suspension systems, the YZ125 is engineered for peak performance in off-road competition. With a focus on agility and rider control, it features a 6-speed constant mesh transmission, wet multi-disc clutch, and hydraulic disc brakes. The 2009 model represents a refined iteration of Yamaha's long-standing legacy in motorsports, designed to deliver exceptional handling and a thrilling riding experience.

The 2010 Yamaha YZ125 is a high-performance motocross motorcycle renowned for its potent liquid-cooled, 2-stroke, 124cc engine and agile handling. Featuring a lightweight aluminum bilateral beam frame, advanced Kayaba Speed Sensitive System (SSS) front forks, and a Monoshock rear suspension, this model is engineered for competitive off-road riding. Its legacy in the 125cc two-stroke class is built on decades of Yamaha's motocross expertise, offering riders a thrilling and responsive machine designed for peak performance on the track.

The 2010 Yamaha YZ125 is a highly regarded motocross motorcycle, celebrated for its potent 124cc liquid-cooled two-stroke engine featuring the YPVS system. This model is engineered for competitive racing and demanding off-road use, offering a lightweight aluminum frame, advanced Kayaba suspension, and race-bred ergonomics. Yamaha's extensive heritage in motocross racing underpins the YZ125's reputation for reliability, performance, and the exhilarating experience of a powerful 125cc two-stroke machine. Its design prioritizes agility and responsiveness, making it a formidable contender in its class.

The 2011 Yamaha YZ125 is a high-performance motocross motorcycle renowned for its agile handling and potent two-stroke engine. Featuring Yamaha's patented Power Valve System (YPVS) for enhanced power delivery and KYB Speed Sensitive System (SSS) front forks for superior damping, this model is engineered for competitive riding. Its lightweight construction and robust chassis, a hallmark of the YZ lineage, provide riders with exceptional control and feedback on the track, solidifying its reputation as a dominant force in motocross.

The Yamaha YZ125, a performance-oriented 125cc two-stroke motocross competition machine, has been a significant presence in the 125cc class for decades. Known for its lightweight chassis, powerful and responsive two-stroke engine, and advanced suspension systems, the YZ125 offers an exciting and competitive riding experience. Yamaha's heritage in motocross racing is evident in the YZ line's consistent recognition for innovation and performance, making the 2011 model a notable entry in its evolutionary history.

This manual covers the Yamaha YZ125 Motocross Motorcycle from 2012, a celebrated machine in the competitive 125cc two-stroke class. Renowned for its potent 2-stroke power delivery, advanced Kayaba SSS suspension, and lightweight chassis, the YZ125 is engineered for performance and rider control. As a staple for aspiring racers and experienced enthusiasts, this model represents a refined iteration of Yamaha's legendary YZ platform, built on a rich heritage of motocross innovation. Its design prioritizes agility and responsiveness, making it a formidable choice for off-road competition and demanding riding conditions.

The 2012 Yamaha YZ125 is a high-performance off-road motorcycle designed for motocross competition. It features a liquid-cooled, 125cc two-stroke engine with Yamaha's Power Valve System (YPVS) for optimized power delivery, paired with a lightweight aluminum bilateral beam frame for exceptional handling. The motorcycle is equipped with premium KYB fully adjustable front forks and rear shock absorber, delivering superior suspension performance essential for demanding race conditions. Known for its agile handling and potent engine within its class, the YZ125 has a strong lineage in motocross, representing a mature and competitive iteration of Yamaha's enduring off-road platform.

The Yamaha YZ125 is a highly regarded off-road motorcycle, produced for the 2013 and 2014 model years. Renowned for its lightweight, agile handling and a powerful two-stroke engine, this motocross bike is engineered for both entry-level riders and intermediate competitors. Key features include advanced KYB Speed Sensitive System front forks and a Monoshock rear suspension, providing superior damping and adjustability for demanding terrain. Yamaha's extensive heritage in motocross racing underpins the YZ125's competitive edge and reliable performance, making it a popular choice for racing and trail riding.

The Yamaha YZ125 is a highly regarded motocross motorcycle, produced for the 2017 model year. Renowned for its lightweight chassis, potent 2-stroke engine, and user-friendly handling, it is engineered for entry-level to intermediate performance motocross competition, youth and amateur racing, and trail riding. Key selling points include its durable construction, strong aftermarket support, and class-leading suspension performance, featuring KYB Speed Sensitive System (SSS) front forks and a KYB monoshock rear. Yamaha's extensive motorsport legacy underpins the YZ125's development, which has continuously evolved to offer competitive performance on the track.

The Yamaha YZ125, a distinguished motocross motorcycle produced for the 2018 model year, represents a pinnacle of performance and engineering in the competitive off-road segment. Renowned for its potent liquid-cooled 125cc two-stroke engine equipped with the Yamaha Power Valve System (YPVS), this machine delivers exhilarating power and agility. Its design philosophy emphasizes a lightweight aluminum bilateral beam frame, industry-leading KYB Speed Sensitive System (SSS) front forks, and a fully adjustable KYB rear shock absorber, all contributing to exceptional handling and rider control on demanding tracks. The YZ125 is engineered for motocross racers and performance-oriented riders seeking a reliable and competitive machine.

The Yamaha YZ125 is a renowned motocross motorcycle, celebrated for its performance and reliability in off-road competition. Covering the 2005 and 2006 model years, this machine embodies extensive motorsports legacy, offering a potent two-stroke, liquid-cooled 124cc engine. Its design prioritizes agility and rider control, making it a favored choice for motocross racers and enthusiasts seeking a competitive edge. The YZ125's engineering is focused on delivering a thrilling and capable off-road experience, built upon decades of development in two-stroke technology and chassis dynamics.

This manual covers the YZ125 off-road motorcycle models produced for the 2003 and 2004 model years. Renowned for its potent 125cc two-stroke engine, agile handling, and competitive motocross performance, the YZ125 has been a staple in the lineup, continuously refined for optimal performance. This particular generation is celebrated for its robust engineering and its appeal to both amateur and professional riders seeking a capable machine for competition. The YZ125 is a liquid-cooled, single-cylinder motorcycle featuring a 6-speed transmission and a hydraulically actuated wet, multiple-disc clutch, embodying a commitment to high-performance off-road vehicles.

This manual covers the YZ125, a performance motocross motorcycle produced for the 1999 and 2000 model years. Renowned for its spirited 125cc two-stroke engine, lightweight aluminum frame, and agile handling, the YZ125 is a staple in the competitive off-road and motocross segments. The long heritage in racing is evident in the engineering quality and performance focus of this model, designed to deliver an exhilarating riding experience for enthusiast owners and racers alike.