STONEDER YX 170cc Engine Cylinder For SSR SR170TR Kayo 170cc Pit Dirt Bike Motorcycle Replacement engine cylinder designed for compatibility with SSR SR170TR and Kayo 170cc pit dirt bikes.This cylinder is engineered to fit 170cc engine configurations and supports proper engine performance and compression.Constructed for durability under standard operating conditions, it serves as a direct-fit component for engine rebuilds or.The design follows specifications to alignment with the engine block and related components. This item is a compatible alternative.Use of brand identifiers is limited to showing which models it fits.