S&S Cycle Twin Cam 635C Easy Start Camshaft Kit - 330-0331

Upgrade your engine's performance with the S&S Cycle 640 Easy Start Camshaft Kit. This kit delivers enhanced power and improved starting, making it an excellent choice for serious riders.

Description

The S&S Cycle 640 Easy Start Camshaft Kit is engineered to provide an easy start by temporarily reducing crank compression. Once the engine starts and RPM increases, the compression release lobe retracts, allowing the engine to run at full compression without any performance loss. This cam kit is designed for 95", 96", 103", and 110" engines with compression ratios between 10.5:1 and 11.5:1. Expect the strongest performance gains in the 3000 RPM - 6000 RPM range. Made in the USA with meticulous attention to detail, this kit offers reliable performance and durability. Whether you're looking for better throttle response or more power on the open road, the S&S Cycle 640 cam is a top choice for Harley-Davidson enthusiasts and professional builders alike. Installation requires careful attention to clearances.

Features & highlights

• Easy start design reduces cranking compression for effortless starts.
• Optimized for 95", 96", 103", and 110" engines with 10.5:1 to 11.5:1 compression ratios.
• Provides strongest performance gains in the 3000 RPM - 6000 RPM range.
• Ensures full compression and no performance loss once the engine is running.
• Made in the USA, ensuring high-quality materials and manufacturing.
• Includes an installation kit for straightforward installation.

Technical specifications

• Brand: S&S Cycle
• Product Name: Cam Kit
• Grind: 635 Series
• Type: Chain
• Application: Exhaust, Intake
• Exhaust Lift: 0.635"
• Exhaust Duration: 276°
• Exhaust Open: 58.5°
• Exhaust Close: 37.5°
• Intake Lift: 0.635"
• Intake Duration: 243°
• Intake Open: 19.5°
• Intake Close: 43.5°

Important to know

Please note the following requirements and limitations:

• Installer must check coil bind, valve-to-valve clearance, and valve-to-piston clearance.
• Not for models with OEM compression releases.
• High-lift springs and adjustable pushrods are required (not included).