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Upgrade your Harley-Davidson engine with the S&S Cycle 4-Inch Big Bore Sidewinder Cylinder Kit, designed specifically for 110-inch engines. This bolt-in kit requires no machining, balancing, or splitting of the crankcases, allowing for an easy installation with the engine still mounted in the frame. Constructed with a cast ductile iron sleeve embedded in cast aluminum, this design offers superior heat transfer and durability, ensuring optimal performance and longevity.
This kit boosts the stock 88-inch engines to 100 inches, and 96-inch or 103-inch engines to 110 inches, providing significant power gains. The high-compression ratio of 10.5:1, compatible with stock 85cc heads, creates a streetable yet dependable engine that responds well to performance cams. The complete kit includes cylinders, forged pistons, rings, piston pins, clips, and gaskets, offering everything needed for a comprehensive upgrade.
Please note that this kit is not compatible with S&S 79cc heads. Its straightforward bolt-in design makes it suitable for experienced enthusiasts seeking increased horsepower without extensive engine modifications. The black finish adds a sleek, professional look to your engine, complementing a variety of custom builds and restorations. Whether for daily riding or performance-focused projects, this cylinder kit provides an excellent balance of performance, reliability, and ease of installation.
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