946480 Replacement 80" Flathead piston kit. std

Rebuilding an 80-inch Flathead requires precision, and this MCS piston kit is designed to meet those stock specifications for a 1300cc Side Valve overhaul. This kit is for a standard 3-7/16 inch bore and is sold as a set. It fits 1937 to 1941 80-inch Flathead models. The pistons are cast aluminum and come complete with wrist pins, retainers, and the necessary piston rings. It’s a comprehensive package that takes the guesswork out of sourcing individual components. As any mechanic will tell you, checking clearances and following a strict break-in period is vital for these vintage engines. It’s a great way to bring that old 80-incher back to life. OEM 22216-30 and 946480.