S&S Cycle Camshafts for 103ci - Harley Dyna

S&S Cycle camshafts for 103 cubic inch engines are designed as a bolt-in performance upgrade for V-twin riders looking to improve their engine's output and responsiveness. Part number 330-0343 is built for engines running compression ratios from 9.7:1 up to 10.5:1, so it suits both stock setups and builds that have moved up within that range.

The camshaft is optimized to deliver peak power in the 3000 to 6000 rpm range, giving a strong, usable powerband where it matters most for spirited riding. It works with both stock heads and S&S ported heads, so riders with a stock 103ci engine or one that already has S&S CNC ported cylinder heads can use it. Riders can expect a more aggressive throttle response and a stronger pull through the gears.

The cam weighs 4.1 lb and is a bolt-in installation, which keeps the upgrade straightforward for those working on a 103ci engine.

For off-road / closed-course race use only.

Specifications

• Brand: S&S Cycle
• Category: Camshafts
• Part Number: 330-0343
• Displacement: 103ci
• Compression Range: 9.7:1 to 10.5:1
• Power Band: 3000-6000 rpm
• Installation: Bolt-in
• Weight: 4.1 lb

Common questions