S&S Cycle MR103 Easy Start Camshaft Kit for Twin Cam 1999-2006 (Excluding Dyna 2006) – Part Number 330-0466

Camshaft Kit - Easy Start - MR103 Gear Drive - Twin Cam '99-'06 (except '06 Dyna)

The S&S Cycle MR103 Easy Start Camshaft Kit is designed to improve engine performance while ensuring easier starting for Twin Cam models from 1999 to 2006, excluding the Dyna lineup for 2006. This kit features a specially engineered camshaft that reduces initial crank compression, facilitating easier engine starts. Once the engine reaches higher RPMs, the centrifugal retraction of the compression release lobe allows the engine to run smoothly with full compression, maintaining optimal performance without any loss of power. Suitable for engines with stock compression ratios between 9.7:1 and 10.5:1, this kit delivers increased power across the rpm range, with the most notable gains between 2500 and 5500 rpm. The package includes all necessary components such as camshafts, gearcover gasket, bearings, retaining ring, O-ring, threat lock, and detailed installation instructions, making it a comprehensive upgrade for your motorcycle. Crafted in the USA, this camshaft kit works seamlessly with stock, un-ported heads and is highly effective with S&S CNC ported heads, offering versatility for various engine configurations. Proper installation requires checking coil bind, valve-to-valve clearance, and valve-to-piston clearance to ensure optimal operation and safety. Please note, this kit is not compatible with models equipped with OEM compression releases, ensuring it is suited for specific engine setups. Overall, the S&S Cycle MR103 Easy Start Camshaft Kit is an ideal choice for riders seeking enhanced power, reliable starting, and a straightforward bolt-in upgrade to their Twin Cam engines.

Features:

• Reduces initial crank compression for easier starting

• Centrifugally retracts compression release lobes at higher RPMs for full engine performance

• Designed for 103-inch engines with stock compression ratios from 9.7:1 to 10.5:1

• Delivers increased torque and power across a broad RPM range, optimized between 2500 and 5500 rpm

• Includes camshafts, gearcover gasket, bearings, retaining ring, O-ring, threat lock, and installation instructions

• Made in the USA with quality components suitable for stock or CNC ported heads

• Requires checking coil bind, valve-to-valve, and valve-to-piston clearances during installation

• Not compatible with models featuring OEM compression releases