S&S CYCLE 117" Standard Compression Big Bore Kit for '07-'17 Big Twins (except '17 touring models) - Black Wrinkle Finish - 910-0221

This 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 with stock or S&S cylinder heads with stock bolt pattern. For best performance, appropriate camshafts, performance air cleaner, performance exhaust and fuel system tuning are required. Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates

**Crankcases must be bored to accept the larger 4-1/8" bore cylinders.
**When using Harley Twin Cooled heads, part number 900-0609 will have to be used.

Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes.

• Big Bore kit yields excellent results with stock cylinder heads
• Easy installation no need to bore or split existing cases, just swap the cylinders (unless otherwise noted)
• Cylinders are constructed from premium aluminum castings with cast-in iron liners
• Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust)
• Made in the U.S.A.
• Project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.
  
  NOTE: Not recommended for trike models
  NOTE: This kit will require that the case be bored to accept the larger cylinders
  NOTE: Crankcases must be bored to accept the larger 4-1/8" bore cylinders. EFI engines will require tuning. S&S recommends Dynojet® Power Vision® flash tuners for 2001-'16 engines with Delphi® EFI systems. Not legal for sale or use on CA or EPA pollution controlled motorcycles.

Specs