905281 Replacement XL 900cc cast piston. std

For those maintaining a classic 900cc Ironhead, this MCS replacement cast piston is a vital component for a stock rebuild. This is a standard-sized piston that maintains the original 9:1 compression ratio, ensuring your vintage Sportster runs as the factory intended. The kit includes the piston, wristpin, and wristpin clips, but please note that piston rings must be purchased separately. It fits 1957 to 1971 XL900 models. We recommend that a qualified mechanic performs the installation to ensure all engine tolerances are met and proper break-in steps are followed. This part is listed under number 905281.