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Our latest introduction is the 500 series differential bore 4 piston caliper
Fits 1999-2017 big twin and 1986-2003 SB-series engines
with 50% more load bearing surface than stock
5 spoke contrast cut
The SIEGE design is sure to look great on your machine and is priced to fit any budget
4 1/8" Bore Cylinder and Piston Kit Pistons for 124" Hot Set Up® with Stock Heads For 1999-'06 Big Twins - Silver Powder Coat Finish FOR ROAD GLIDES Our latest introduction is theThis big bore cylinder and piston kit contains S&S 4 1 8" bore cylinders and forged pistons, rings, wrist pins, head and base gaskets. Pistons are machined with a 10. 9cc dish and ar intended for use with stock cylinder heads. The cylinders are machined with the stock bolt pattern and are intended for use in stock crankcases of 1999 '06 big twin engines. Designed for 4 5 8" stroke flywheels, resulting in 124" displacement. Cylinder finish is a durable
