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Roller chains are typically found in situations that require maximum power transfer, in a small space, at an economical price. ATVs, motorcycles and scooters often use a drive chain, drive sprocket and driven sprocket to transfer power from engine to the wheel(s). Because of the demands put on a … [Read more...] about Chain, Roller

A castle nut, or castellated nut is a specialized nut that is sometimes used on motorcycle axles, swingarms or any application where it is crucial that the nut not be permitted to vibrate off. Generally the end of the bolt where the castellated nut threads on will have a hole drilled through it. … [Read more...] about Castellated Nut

The Constant-Velocity Joint allows a rotating shaft to transmit power through a variable angle, at constant rotational speed, without any significant increases in friction or play. CV Joints are commonly used at ends of the axle halfshafts on four wheel drive ATVs. These joints are very strong … [Read more...] about CV Joint

A motorcycle clutch basket is a bowl-shaped gear-driven housing bolted onto the end of the clutch shaft. Its job is to hold the entire clutch assembly together. When servicing your clutch it is important to inspect your clutch basket for cracks and wear. Your service manual will generally provide … [Read more...] about Clutch Basket

Clutch springs can be found in use on most motorcycle clutch assemblies. The function of these short coil springs is to continuously hold the friction and driven plates together through spring tension, preventing slippage except when the clutch lever is engaged. Most often, five or more clutch … [Read more...] about Clutch Springs

Customized motorcycle built in the style currently categorized as a sportbike; popular in the 1960s, 1970s and early 1980s. The term originated in England when it was popular to modify a motorcycle for better performance and riders would race from cafe to cafe. Sometimes a jukebox would be started … [Read more...] about Café-racer

The mixing of air with a fluid. When air is allowed to enter the oil pump of a motorcycle engine it can cause a situation where the oil is displaced and unable to flow properly through the pump. A solution is often to bleed the air out of the lubrication system. Cavitation can also be a problem with … [Read more...] about Cavitation

Refers to the diameter of the cylinder that the piston fits into in a motorcycle engine. … [Read more...] about Cylinder Bore