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The S&S Cycle HP103 Chain Drive Camshaft Kit (Part 330-0442) is specifically engineered for Twin Cam engines from 1999 to 2006, excluding the 2006 Dyna model. Designed as bolt-in cams, these are ideal for engines with a 103-inch displacement and a stock 9.7:1 compression ratio up to 10.5:1. The kit is compatible with stock, un-ported heads but also performs excellently with S&S CNC ported heads, providing optimal power and efficiency. These cams are tailored to deliver strong torque and horsepower in the 3000 to 6000 RPM range, making them suitable for riders seeking enhanced performance across a broad RPM spectrum. Made in the USA, the kit includes all necessary components for a straightforward installation, ensuring quality and durability. Please note that high-lift valve springs are required for proper operation, and it is essential to check coil bind, valve-to-valve clearance, and valve-to-piston clearance during installation to prevent potential interference issues.
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