Abstract: An improved liner and friction disk for a clutch basket is disclosed. The improved liner is easily retrofitted into a typical clutch basket and is held in place without fasteners or adhesives or special changes to the clutch basket. The improved liner is held in place without consideration to the outer diameter of the basket allowing the liner to work with a wider range of clutch basket designs and sizes. The liner provides an improved wear surface for the clutch basket's engagement surface with the driving friction surface. A friction disk with tabs adapted to fit inside the narrowed space provided by the improved liner is also disclosed.

Abstract: An improved liner and friction disk for a clutch basket is disclosed. The improved liner is easily retrofitted into a typical clutch basket and is held in place without fasteners or adhesives or special changes to the clutch basket. The improved liner is held in place without consideration to the outer diameter of the basket allowing the liner to work with a wider range of clutch basket designs and sizes. The liner provides an improved wear surface for the clutch basket's engagement surface with the driving friction surface. A friction disk with tabs adapted to fit inside the narrowed space provided by the improved liner is also disclosed.

Abstract: An improved apparatus for varying the pressure applied to a clutch system that can be used to couple a rotational input with a rotational output. Depending on the load and direction of torque in the clutch system, the improved apparatus will engage a spring with more force or less force to affect the amount of torque transferred by the clutch system and the force required by an operator to manually disengage the clutch system.

Abstract: An apparatus and system are disclosed for automatic centrifugal engagement of a pressure plate. The apparatus includes a center clutch coupled rotationally with a transmission input shaft, a clutch basket coupled rotationally with an engine output shaft, and a clutch pack disposed between the center clutch and the clutch basked. The clutch pack includes a plurality of drive plates rotationally coupled to the center clutch and a plurality of friction plates rotationally coupled with the clutch basket. The apparatus also includes a pressure plate assembly that is spring-loaded and disposed between the center clutch and the clutch basket. The pressure plate assembly comprises a pressure plate, a spring plate, and a spring disposed between the pressure plate and the spring plate. The system includes the apparatus and a manual override capable of use with cable actuated and hydraulic actuated clutch levers.