This replacement cylinder and piston kit contains S&S 4-1/8" bore cylinders and forged pistons, head and base gaskets. The cylinders are machined with the stock bolt pattern and are intended to replace cylinders of an S&S 111" Hot Set Up Kit for stock crankcases. The finish is a durable wrinkle black powder coat.

**Crankcases must be bored to accept the larger 4-1/8" bore cylinders.