S&S Cycle Camshafts for 103 Engines - Harley Dyna

Elevate the performance of your Harley-Davidson Dyna 103 engine with S&S Cycle Camshafts. Engineered as direct bolt-in replacements, these cams are optimized to deliver peak power in the crucial 3000–6000 rpm band.

Why riders pick this

• Bolt-in replacement for 103-displacement Dyna engines
• Optimized for 9.7:1 to 10.5:1 compression ratios
• Delivers peak power in the 3000–6000 rpm range
• Works with stock unported or S&S CNC ported heads
• Enhances engine acceleration and responsiveness
• Essential upgrade for performance-minded riders

These S&S Cycle camshafts are designed to seamlessly integrate with 103 displacement engines and compression ratios from 9.7:1 up to 10.5:1. Whether you're running stock unported heads or S&S CNC ported cylinder heads, these cams will unlock significant power, transforming your Dyna's ride experience. They are a fundamental upgrade for riders seeking a more aggressive power curve and improved acceleration.

Unleash Peak Power and Torque

• Direct bolt-in replacement for 103-displacement engines
• Optimized for compression ratios from 9.7:1 to 10.5:1
• Delivers peak power consistently in the 3000–6000 rpm range
• Compatible with both stock unported and S&S CNC ported cylinder heads
• Enhances overall engine responsiveness and acceleration

A Foundation for Performance Builds

Choosing the right camshafts is crucial for any performance build, and these S&S Cycle cams provide an excellent foundation. Their broad compatibility with cylinder head types and compression ratios makes them a versatile choice for many Dyna owners. Install these cams to feel a noticeable difference in how your bike pulls through the gears, especially when paired with a good exhaust system and a proper dyno tune.

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 330-0346
• Category: Engine Components / Camshafts
• Weight: 3.95 lb

Common questions