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Enhance your Twin Cam engine with the S&S CYCLE 106" Hot Set Up® Kit, designed for optimal performance and easy installation. Featuring increased fin area for improved heat dissipation, this kit helps keep your engine cooler during demanding rides. The bore size has been increased from 3.750 inches to 3.927 inches, providing a significant gain in displacement for enhanced power output. The kit's 4.375-inch stroke and 10.0:1 compression ratio work seamlessly with stock heads, delivering a balanced combination of performance and reliability. Forged coated pistons included in this kit are compatible with stock or S&S Super Stock 79cc and 89cc heads, offering versatility for different setups. The valve pockets are recessed and enlarged to accommodate oversize valves and higher lift cams, supporting high-performance modifications. The cylinders feature 11 fins and a full fin pattern on the cam side that closely resembles OEM shapes, ensuring a clean and professional appearance. Installation is straightforward, requiring no machining or rebalancing, which makes it suitable for DIY enthusiasts and professional mechanics alike. The kit includes S&S cylinders with gaskets, piston set with rings, a top end gasket kit, pushrods, tappets, 585CE chain-drive easy start cams, and detailed instructions. Note that a fuel system is not included, and EFI recalibration is necessary for optimal operation. Proudly made in the USA, this kit offers a robust upgrade for riders seeking increased horsepower and engine durability without extensive modifications.
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