Complete set of 4-shoe clutch system includes flywheel, lightweight medium aluminum clutch shoes, gold (soft) clutch springs, assembly screws, flywheel collar, and flywheel nut. The 4-shoe clutch design allows for super-easy clutch setting from soft to difficult environment, each suitable for various track conditions and sporting style. The 4-shoe clutch features smaller, lighter internal parts, additionally the design allows for more balanced clutch bell engagement set alongside the old-fashioned 3-shoe design. The 4-shoe design allows usage of combinations of different hardnesses of shoes and springs for clutch engagement setting, as well as enables a variety of various pairs of shoes and springs which gives ultra-fine engagement settings. You will find 4 various hardness of shoes and 3 various hardness of springs recommended. Changing the setting is very simple as a result of the unique assembly screws that keep the footwear and spring. SOFT clutch environment produces the greatest number of traction and engages earliest; MODERATE clutch establishing allows more clutch slippage and engages later on; COMPLEX clutch establishing engages latest and provides more revs to engine. Optional graphite shoes engage more smoothly and give smoother clutch acceleration. Is employed with 3BB clutch bells #358413 or #358413-L just.