S&S Cycle Camshafts — Harley-Davidson Street Glide, Softail Fat Boy 114, Road King Special (2017-2026)

S&S Cycle 540C camshaft for Harley-Davidson big bore M8 engines, engineered to deliver maximum low-end torque for riders who keep engine speed below 6000 rpm. Works best with the S&S 4.25" Big Bore Kit to unlock substantial displacement gains and acceleration.

Features

• 540 cam profile optimized for torque below 6000 rpm
• Designed for 124cc and larger displacement engines
• Includes all gaskets, bearings, and mounting hardware
• Requires adjustable pushrods and heavy-duty valve springs

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 330-0713
• Category: Engine Components / Camshafts
• Weight: 2.7 lb

Fitment

Fits Harley-Davidson Milwaukee-Eight (M8) engines with big bore displacement of 124cc or larger. Optimized for riders who maintain engine speed below 6000 rpm.

Frequently Asked Questions

What additional parts do I need to install this cam?

Adjustable pushrods and heavy-duty valve springs are required. These are sold separately and compensate for the 540C profile.

Will this cam work on stock displacement engines?

The 540C is designed for 124cc and larger engines. Check with S&S if you have a smaller displacement M8.

What is the power band RPM range for the 540C?

The 540C is optimized for maximum torque below 6000 rpm, favoring low-end acceleration over high-RPM power.

Does this come with everything needed for installation?

The cam includes gaskets, bearings, and all hardware. You'll need to source adjustable pushrods and heavy-duty valve springs separately.

Is this compatible with the S&S 4.25" Big Bore Kit?

Yes — the 540C cam pairs with the S&S 4.25" Big Bore Kit to maximize the torque benefit of increased displacement.