S&S Cycle 590G Gear Drive Camshaft Kit for 2017-Up Harley-Davidson M-Eight

S&S Cycle 590G Gear Drive Camshaft Kit for 2017-Up Harley-Davidson M-Eight

The S&S 590G combines the brand’s highest-lift M-Eight cam profile with precision gear drive timing to deliver maximum performance for serious big bore builds. Riders pushing the limits of their M-Eight engine’s potential will find the 590G delivers a commanding, aggressive power curve that holds strong all the way to redline.

Key Features

• S&S Cycle’s top-performance M-Eight cam in gear drive configuration
• Designed for 124ci and larger high-performance big bore builds
• Gear drive eliminates timing chain for maximum cam timing accuracy
• Produces powerful upper-RPM performance
• Requires adjustable pushrods and high-performance valve springs
• Made in the USA

Technical Specifications

• Lift: .590″
• Duration: 239-254 degrees (intake/exhaust)
• Engine Compatibility: 124ci and larger M-Eight big bore
• Drive Type: Gear
• Tappet Type: Hydraulic
• Pushrod Requirement: Adjustable pushrods required
• Spring Requirement: High-performance valve springs required

Fitment Notes

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