S&S Cycle 590C Chain Drive Camshaft Kit for 2017-Up Harley-Davidson M-Eight

S&S Cycle 590C Chain Drive Camshaft Kit for 2017-Up Harley-Davidson M-Eight

The S&S 590C is S&S Cycle’s top-performance chain drive cam for big bore M-Eight engines, delivering a commanding power curve that dominates from mid-range through peak RPM. Riders chasing maximum horsepower in serious builds will find the 590C stretches the M-Eight’s performance envelope to the limit.

Key Features

• S&S Cycle’s highest-lift M-Eight chain drive camshaft offering
• Designed for 124ci and larger high-performance big bore builds
• Produces strong power across a broad mid-to-upper RPM band
• Requires adjustable pushrods and high-performance valve springs
• Dyno, street, and track tested before release
• 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: Chain
• 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
• 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