946430 Replacement 45" Flathead piston kit. +.050"

When you're rebuilding a classic 45-inch Flathead, you want parts that respect the original design. This MCS piston kit is a solid choice for a stock overhaul, featuring cast aluminum pistons in an OEM style. This specific kit is oversized by .050 inches and fits all 1929 to 1973 45-inch (750cc) Flathead models. We’ve included everything you need to get the top end back together, including the pistons, wrist pins, retainers, and rings. As with any vintage rebuild, make sure you measure everything carefully before installation and follow a proper break-in procedure to ensure these pistons seat correctly. It's a reliable way to keep a piece of history on the road. OEM 946430.