S&S Cycle 910-0474 117" Big Bore Cylinder Kit Stone Gray Twin Cam

The S&S Cycle 117" Big Bore Cylinder Kit delivers exceptional performance for 2007-2016 Harley-Davidson Twin Cam engines. This complete big bore kit features a 4-1/8" (4.125") bore paired with the stock 4-3/8" stroke, resulting in a massive 117 cubic inch displacement and 10.9:1 compression ratio with stock cylinder heads.

Premium Construction:

• Cylinders constructed from premium aluminum castings with durable cast-in iron liners
• Forged pistons for superior strength and reliability
• Stone Gray powder coat finish matches CVO engine appearance
• Machined with stock bolt pattern for precision fitment

Complete Kit Includes:

• 4-1/8" bore cylinders
• Forged pistons and rings
• Wrist pins
• Head, base, and exhaust gaskets

Installation Notes:

This kit yields excellent results with stock cylinder heads and is designed for non-Twin Cooled engines. Important: Crankcases must be bored to accept the larger 4-1/8" bore cylinders. Professional installation by a skilled technician is required. For optimal performance, S&S recommends pairing this kit with appropriate camshafts, performance air cleaner, performance exhaust, and proper fuel system tuning.

Made in the USA. Not legal for sale or use in California on pollution-controlled motor vehicles. Drag Specialties part number 0931-0538.