Clutch springs are a kind of motorcycles parts can be found in use on most motorcycle clutch assemblies. Five or more clutch springs are used per motorcycle clutch assembly. Stiffer springs are typical of higher output engines. Softer springs beget, a lighter clutch lever pull effort. When maintaining your clutch, it is important to check the free length of clutch springs. If clutch springs are out of specification, they can cause clutch to slip which will result in premature failure of other clutch components.

Wheel nuts hold the wheels onto a vehicle. Another important function of wheel nuts is to position the wheel correctly. Basically, there are two types of wheel nuts: cone-seat and shank style. The wheel nut you choose depends on the wheels you use. The trick is to use the correct wheel nut for the wheel and stud combination. Wheel nuts are used to secure the wheel to the vehicle, and wheel nuts need to be loosened and eventually removed any time you want to change a tire, access the brakes, and do a variety of other repairs on your vehicle.

A rocker arm is a valvetrain component in internal combustion engines. Rocker arms were first invented in the 19th century and have changed little in function since then. Improvements of rocker arms have been made, however, in both efficiency of operation and construction materials. Many modern rocker arms are made from stamped steel, though some applications can make use of heavier duty materials.

A dry clutch is one with a plate outside the engine casing. Dry clutch uses friction to engage and has no need for lubricant. Due to the increased friction, dry clutch tends to overheat quickly. To counter the problem, dry clutch has a large surface area to allow for optimal air cooling. Because dry clutch is not awash with oil, dry clutches deliver increased power to the rear wheel and less drag to the engine.