S&S Cycle Twin Cam MR103 Easy Start Cam Kit - 330-0299

Upgrade your 103" engine with the S&S Cycle MR103 Easy Start Camshaft Kit. This kit delivers enhanced power and smooth operation for your motorcycle, ensuring optimal performance across the RPM range. Experience the difference that precision engineering and high-quality components make.

Description

The S&S Cycle MR103 Easy Start Camshaft Kit is specifically designed for 103" engines with a compression ratio between 9.7:1 and 10.5:1. This bolt-in cam design allows for an easier start by initially reducing crank compression. Once the engine starts and RPM increases, the compression release lobe retracts centrifugally, restoring full compression and performance without any loss. Expect increased power, particularly in the 2500 to 5500 RPM range. Compatible with stock, un-ported heads and optimized for use with S&S CNC ported heads, this kit provides versatility and improved engine dynamics. Professional installation is recommended to ensure proper coil bind, valve-to-valve clearance, and valve-to-piston clearance.

Features & highlights

• Easy Start Design: Reduces initial crank compression for effortless starting.
• Enhanced Power: Delivers more power across the RPM range, especially between 2500-5500 RPM.
• Optimized Compression: Centrifugal compression release ensures full compression during normal operation.
• Versatile Compatibility: Works with stock and S&S CNC ported heads.
• Complete Kit: Includes camshafts, gear cover gasket, bearings, retaining ring, o-ring, thread lock, and instructions.
• Made in the USA: Ensures premium quality and reliability.

Technical specifications

• Brand: S&S Cycle
• Product Name: Camshaft Kit
• Grind: MR103
• Type: Chain
• Intake Open: 13°
• Intake Close: 33°
• Intake Duration: 226°
• Intake Lift: 0.585"
• Intake Lift at TDC: 0.172"
• Intake Lobe Centerline: 100°
• Exhaust Open: 50°
• Exhaust Close: 22°
• Exhaust Duration: 252°
• Exhaust Lift: 0.585"
• Exhaust Lift at TDC: 0.177"
• Exhaust Lobe Centerline: 104°

Important to know

• Not for models with OEM compression releases.
• Installer must check coil bind, valve-to-valve clearance, and valve-to-piston clearance.