S&S Cycle 540G Gear Drive Camshaft Kit for 2017-Up Harley-Davidson M-Eight

S&S Cycle 540G Gear Drive Camshaft Kit for 2017-Up Harley-Davidson M-Eight

The S&S 540G brings high-lift cam performance to big bore M-Eight builds with the added precision of gear drive timing. Riders experience an aggressive, broad power curve that feels commanding from city traffic through open highways, all without the timing chain variability that can rob accuracy on performance builds.

Key Features

• High-lift gear drive cam for 124ci and larger M-Eight engines
• Gear drive eliminates timing chain for maximum cam timing accuracy
• Designed for strong mid-to-upper RPM power delivery
• Requires adjustable pushrods and upgraded valve springs
• Dyno, street, and track tested before release
• Made in the USA

Technical Specifications

• Lift: .540″
• Engine Compatibility: 124ci and larger M-Eight big bore
• Drive Type: Gear
• Tappet Type: Hydraulic
• Pushrod Requirement: Adjustable pushrods required
• Spring Requirement: Upgraded valve springs required

Fitment Notes

• Fits 2017-Up Harley-Davidson M-Eight models
• Requires adjustable pushrod and cover kit
• Requires upgraded or Harley-Davidson high-performance valve springs
• Gear drive models may produce additional valve train noise
• Verify coil bind, valve-to-valve clearance, and valve-to-piston clearance
• Review the Fitment tab for complete year and model breakdown