This is a complete standard-sized replacement cylinder kit designed for use with the Scrambler 500 models from 1996 to 2010.It is compatible with part numbers 3087221, 3087224, 3089966, and 3086811.The kit includes a cylinder, piston, piston rings, wrist pin, two circlips, head gasket, base gasket, head cover gasket, chain tensioner gasket, exhaust gasket, and cam cover gasket.The cylinder has a bore of 92 mm and a stroke of 75 mm.This kit is intended to restore function and fitment.