Replacement 80" Flathead piston kit. +.070" 37-41 80" (1300cc) 3-7/16" bore Flatheads (NU)

Cast aluminum pistons for a stock 1300cc Side Valve rebuild. Pistons include wrist pins retainers & piston rings. Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components prior to installation. It is of importance that a knowledgeable mechanic will install & make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines. 37-41 80" (1300cc) 3-7/16" bore Flatheads (NU)