**1991 Yamaha XTZ660 Motorcycle**
**Introduction:**
The 1991 Yamaha XTZ660 is a versatile and powerful dual-sport motorcycle that combines off-road prowess with on-road comfort. This iconic machine is renowned for its robust construction, exceptional performance, and versatility across diverse terrains.
**Engine and Performance:**
At the heart of the XTZ660 lies a 659cc, single-cylinder, air-cooled engine that produces robust power and torque. This engine is engineered with a compression ratio of 9.0:1 and is equipped with a carburetor, ensuring quick throttle response and optimal fuel efficiency. Power is seamlessly transferred to the rear wheel through a reliable 5-speed constant mesh transmission, providing smooth gear changes and efficient power delivery.
**Chassis and Suspension:**
The XTZ660's chassis and suspension system are designed for both off-road adventures and paved roads. The frame is constructed from lightweight and durable aluminum, featuring a double-cradle design that provides excellent strength and rigidity. The front suspension consists of a 43mm telescopic fork with 10.6 inches of travel, while the rear suspension employs a monoshock with 10.5 inches of travel. The suspension components are fully adjustable, allowing riders to tailor the ride to their specific preferences and riding conditions.
**Braking System:**
The XTZ660 is equipped with a responsive braking system that ensures precise control and reliable stopping power. The front brake features a dual-piston caliper gripping a 298mm disc, providing ample stopping force. The rear brake utilizes a single-piston caliper and a 245mm disc, providing balanced braking performance in all conditions.
**Bodywork and Styling:**
The XTZ660's aggressive and aerodynamic bodywork enhances its sporty character and contributes to its overall performance. The sleek fairing reduces wind resistance, while the wide handlebars offer excellent leverage and control. The instrument cluster provides clear and concise information, including speedometer, tachometer, fuel gauge, and other essential indicators.
**Off-Road Capabilities:**
The XTZ660 is a highly capable off-road motorcycle, equipped with features that ensure maximum traction and control in challenging terrain. The 21-inch front wheel and 18-inch rear wheel provide ample ground clearance, while the knobby tires offer superior grip on loose surfaces. The machine's long-travel suspension allows for smooth riding over bumps and obstacles, making it an ideal choice for off-road enthusiasts.
**On-Road Performance:**
Despite its off-road prowess, the XTZ660 performs remarkably well on paved roads. Its powerful engine delivers ample acceleration, while the comfortable seating position and wind protection provide a smooth and engaging riding experience. The wide handlebars offer excellent stability, while the responsive handling allows for precise cornering and maneuverability.
**Conclusion:**
The 1991 Yamaha XTZ660 Motorcycle is a truly versatile and capable machine that combines off-road performance with on-road comfort. Its robust construction, powerful engine, and well-balanced chassis make it an ideal choice for riders seeking adventure and versatility. Whether navigating challenging off-road trails or cruising on paved roads, the XTZ660 delivers an exceptional riding experience that is unmatched by its peers.
