S&S Cycle SS910-0221 117ci Big Bore Kit Black for Twin Cam 07-17This big bore cylinder and piston kit contains S&S 4 1 8" bore cylinders and forged flat topped pistons, rings, wrist pins, head and base gaskets. The cylinders are machined with the stock bolt pattern and are intended for use in stock crankcases of 2007 '17 big twin except 2017 touring engines. The stock 4 3 8" stroke and 4 1 8" bore result in a 117' displacement. Cylinder finish is a durable wrinkle black powder coat. This cylinder kit may be used