S&S Cycle 509C Chain Drive Cam Kit for 1999-2006 Harley-Davidson Twin Cam Big Twin

S&S Cycle 509C Chain Drive Cam Kit for 1999-2006 Harley-Davidson Twin Cam Big Twin

Replace worn factory timing equipment and wake up the dormant performance in your Twin Cam engine. The cam swap delivers noticeable gains in throttle response and mid-range torque – the kind of upgrade that makes the bike feel fundamentally more alive without requiring extensive disassembly or additional parts.

Key Features

• Chain drive cam with 0.509″ lift for 1999-2006 Twin Cam Big Twin engines
• Compatible with factory valve springs – no spring upgrade required
• No cam chest machining required for installation
• Direct replacement for the factory chain drive cam setup
• Proven performance across the Twin Cam 88 platform

Technical Specifications

• Lift: 0.509″
• Drive Type: Chain Drive
• Compatible Engine: Twin Cam 88

Fitment Notes

• Fits 1999-2006 Harley-Davidson Big Twin models
• Does not fit 2006 Dyna models
• Compatible with stock valve springs – no additional spring upgrade required
• Review the Fitment tab for complete year and model breakdown