S&S Cycle 33-5124 510V Bolt-In Performance Camshaft for Big Twin Engines

The S&S Cycle 510V Camshaft (PN 33-5124) is S&S Cycle's recommended best bolt-in cam for Evolution Big Twin street performance. Designed to deliver a meaningful power increase without requiring a full valve train overhaul, the 510V works with stock pushrods, valve springs, and hydraulic tappets — making it one of the easiest performance upgrades available for qualifying Big Twin applications.

The 510V's improved ramp design minimizes valve train noise while delivering approximately 10 horsepower over stock. Power delivery is strong through the low and mid range, with an optimal power band spanning 3,000–5,000 RPM. Horsepower gains are comparable to the S&S 502 cam, but with improved low and midrange torque characteristics.

Key Features:

• S&S Cycle's recommended best bolt-in cam for Big Twin street performance
• Works with stock pushrods, valve springs, and hydraulic tappets — no valve spring spacing required
• Improved ramp design for reduced valve train noise
• Approximately 10 horsepower gain over stock
• Designed for engines up to 96ci with up to 10:1 compression ratio
• Made in the U.S.A.
• Each S&S cam is tested on the dyno, street, and track before release

Cam Specifications:

• Intake Lift: 0.510"
• Exhaust Lift: 0.510"
• Intake Duration: 238°
• Exhaust Duration: 252°
• Intake Opening: 20° | Intake Closing: 38°
• Exhaust Opening: 52° | Exhaust Closing: 20°
• Intake Lift at TDC: 0.187"
• Exhaust Lift at TDC: 0.178"
• Tappet Type: Hydraulic

Installation Note: Installer must verify coil bind, valve-to-valve clearance, valve-to-piston clearance, and cam lobe-to-case clearance prior to operation. Standard clearance checks are recommended.