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Upgrade your modified Twin Cam engine with the S&S CYCLE 635 H.O. camshaft kit, designed specifically for engines with 106 inches or greater displacement and compression ratios between 10.0:1 and 11.0:1. This high-performance kit enhances power output primarily between 3,000 and 6,000 RPM, making it ideal for riders seeking increased acceleration and top-end performance. The kit is compatible with stock, unported heads; however, S&S CNC ported heads are recommended to maximize airflow and performance benefits. Crafted in the USA, this kit ensures quality and durability for demanding applications. It includes camshafts, bearings, gear cover gasket, retaining ring, O-ring, thread lock, and detailed installation instructions, providing a comprehensive upgrade solution for experienced installers. Proper installation requires checking coil bind, valve-to-valve clearance, and valve-to-piston clearance to ensure optimal operation and longevity of your engine. This is not a bolt-in camshaft kit, so professional installation and engine tuning are strongly recommended to achieve the best results and maintain engine reliability. Whether you're customizing for performance or replacing worn components, this kit offers a reliable way to enhance your Twin Cam engine's power and responsiveness.
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