Underside view of a twin-cam engine and timing chain cover with…

Four motorcycle fork coil springs displayed on a black Eibach Moto Springs mat Two motorcycle fork tubes draining oil into a white bucket against a basement wall Rider jumping a blue dirt bike high over desert dunes with mountains in the distance Motocross rider mid-air on a dirt bike over desert dunes under blue sky Rider jumping a blue dirt bike high over desert dunes with other riders below Motorcycle rider on a sandy hill under a clear blue sky Motorcycle engine top end with 'MAGNESIUM' cover, hoses and radiator Underside view of a twin-cam engine and timing chain cover with road grime Underside of an aluminum motorcycle valve cover held in hand during valve work Yamaha dirt bike mid-service with engine top end exposed in a garage Rear of blue Yamaha WR450 dirt bike with taillight and exhaust in a garage Motorcycle tail at night with lit LED taillight, California plate with 2005 tags, and muffler at right Mud-caked aluminum bracket and wiring connector on a blue off-road motorcycle Rear fender of blue Suzuki motorcycle at night with USMC decal and brightly lit California license plate Amber turn signal above muffler under blue dirt bike bodywork, EPA noise label Close-up of a blue-and-white dual-sport motorcycle's amber front turn signal and plastics. 113photos in this albumView all