Complete couple of 4-shoe clutch system includes flywheel, lightweight moderate aluminum clutch footwear, silver (soft) clutch springs, installation screws, flywheel collar, and flywheel nut. The 4-shoe clutch design allows super-easy clutch developing from soft to difficult environment, each well suited for different track conditions and sporting design. The 4-shoe clutch features smaller, lighter interior components, as well as the design permits more balanced clutch bell engagement compared to the classic 3-shoe design. The 4-shoe design permits using combinations of various hardnesses of footwear and springs for clutch engagement setting, including allows a number of different pairs of footwear and springs which gives ultra-fine engagement settings. You will find 4 various hardness of shoes and 3 different hardness of springs recommended. Changing the environment is simple as a result of the original installation screws that keep carefully the footwear and spring. SMOOTH clutch environment creates the maximum wide range of traction and engages earliest; MODERATE clutch developing allows more clutch slippage and engages in the future; INVOLVED clutch developing engages latest and more revs to engine. Optional graphite footwear engage more smoothly and offer smoother clutch acceleration. Is needed with 3BB clutch bells #358413 or #358413-L just.