S&S CYCLE 124" Standard Compression 4-1/8" Big Bore Kit for '07-'16 Big Twins - Wrinkle Black Finish - 910-0338

This big bore cylinder and piston kit can be used as replacement for the cylinders and pistons for an S&S 124" Hot Set Up Kit, a T124 T2 engine or as the basis for a new engine build. Kit contains S&S 4-1/8" bore cylinders and forged flat dome 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-'16 big twin engines. This kit must be used with 4-5/8" flywheels resulting in 124' 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.

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

• 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: This kit will require that the case be bored to accept the larger cylinders; must be used with 4-5/8" flywheels
  NOTE: Stock 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.

Fitment Guide

Specs