This is a TKO rear Ceramic engine bearing for the Werks, Sirio and Ex-Tech off-road competition buggy and truck engines. The bearing dimensions are 14mm inner, 25.3mm outer and 6mm thick. This bearing will also fit any other .21 to .28 competition engine that uses the same bearing dimensions.
IMPORTANT: The Inner race is wider on one side. This side faces rear of engine.
