Mini moto quad motard dirt bike performance 2 shoe clutch non keyway typethis is a clutch designed by funbikes to fit all mini moto based engines. It is direct replacement upgrade for the 3 shoe clutch, and has been fitted to all funbikes from december 2012. Three shoe clutches have a tendency to break their clutch springs, or maybe even their clutch arms when under load. This clutch has two beefier springs and stronger arms. It's much stronger in every way, and therefore superior. This particular clutch does not have a slot for the keyway. This will fit any 49cc 2 stroke engine from funbikes, however you will need to make sure the centre bolt is tightened correctly. Summarytwo plate clutchtwo substancial springsheavy duty constructiontapered crank fitmentmore reliable than any three shoe clutch