This is the complete clutch retrofit kit from IAME for the Komet Piston Valve(KPV), formerly known as the Horstman Piston Valve(HPV). The kit includes the friction hub, drive drum, drive sprocket, adapter ring for clutch cover, clutch cover and all the necessary hardware for installation.
The IAME made clutch will now be the stock clutch on all new KPV engines. The retrofit kit will make it easy to change out the original Horstman EXPD-A disc clutch on older engines to the new shoe style clutch. You must check with the region or club rules that you race in to determine if and when the new clutch will be required for competition.