S&S Cycle 4-inch Big Bore Sidewinder Cylinder Kit - 110-inch - Silver (Part #910-0650)

4" Big Bore Bolt-In Sidewinder® Cylinder Kit - 110" - Silver

Upgrade your Harley-Davidson engine with the S&S Cycle 4-inch Big Bore Sidewinder Cylinder Kit, designed for exceptional performance and ease of installation. This bolt-in kit requires no machining, balancing, or splitting of the crankcases, allowing for a straightforward installation with the engine still mounted in the frame. Crafted from cast aluminum with a cast ductile iron sleeve, it offers superior heat transfer and durability for demanding riding conditions. When installed on an 88-inch engine, the kit boosts displacement to 100 inches, while 96-inch and 103-inch engines are increased to 110 inches, providing significant power gains. The high-compression ratio of 10.5:1 (with stock 85cc heads) delivers a streetable yet responsive engine that responds well to performance cams for those seeking enhanced performance. The complete kit includes cylinders, forged pistons, rings, piston pins, clips, and gaskets, ensuring a comprehensive upgrade for your motorcycle. Note that this kit is not compatible with S&S 79cc heads, so compatibility should be verified before installation. This kit is ideal for riders looking to improve their bike’s power output without extensive engine modifications, offering a reliable and high-performance upgrade for Harley-Davidson enthusiasts seeking a boost in horsepower and torque.

Features:

• Bolt-in installation: No machining, balancing, or splitting crankcases required

• Cast ductile iron sleeve in cast aluminum: Provides superior heat transfer and durability

• Engine boost: Increases 88-inch engines to 100 inches and 96/103-inch engines to 110 inches

• High compression: 10.5:1 ratio for a balance of streetability and performance

• Complete kit: Includes cylinders, forged pistons, rings, piston pins, clips, and gaskets

• Compatibility note: Not for use with S&S 79cc heads