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ProCycle 440cc BIG BORE 89mm KIT 2 With Cam Complete kit with 11:1 Wiseco piston (with rings, pin & clips), big bore cylinder sleeve, HotCams stage 3 camshaft and top end gasket set. You will have to have the larger sleeve installed in your cylinder.

ProCycle 425cc BIG BORE 88mm KIT With Cam Complete kit with 11:1 Wiseco piston (with rings, pin & clips), HotCams stage 1 performance camshaft and gaskets. No re-sleeving required. You will have to have your cylinder bored to fit the larger piston.

ProCycle 440cc BIG BORE 89mm KIT 1 With Cam. Complete kit with 12.5:1 Wiseco piston (with rings, pin & clips), big bore cylinder sleeve, HotCams stage 3 camshaft and top end gasket set. You will have to have the larger sleeve installed in your cylinder.