YAMAHAXT 660X 2004 - 2005

　　In 2004, the Japanese motorcycle manufacturer launched the Yamaha XT 660X, a motorcycle produced alongside the XT 660R racing motorcycle. Both motorcycles packed the same engine and shared some chassis components.

　　The bike was fitted with standard features, such as a high-mounted front fender, a single headlight, a small front cowl with a tiny windscreen, a one-piece dual seat with passenger grab handles, a dual exhaust system with a silencer on each side, and wire-spoke wheels with road tires.

　　The bike was built around a steel tubular diamond frame with a 43 mm telescopic fork on the front end, providing 225 mm of travel, and a monocross suspension system on the rear, delivering 200 mm of travel.

　　In the braking department, the XT 660X had installed a 320 mm disc grabbed by a four-piston caliper on the front wheel and a 245 mm disc managed by a single-piston caliper on the rear wheel, delivering optimum braking performance.

　　In the performance department, the 2004 Yamaha XT 660X had installed a 659cc four-stroke liquid-cooled single-cylinder engine managed by a fuel injection system. As for the power figures, the power unit provided 48 hp with a peak force at 6,000 rpm and 58 Nm (43 lb-ft) torque at 5,250 rpm.

　　The power produced by the engine was sucked into a five-speed manual transmission with a wet multi-plate clutch and sent to the rear end through a final chain drive.