S&S Cycle Twin Cam 551G Camshaft Kit - 106-4868

Upgrade your Harley-Davidson touring bike's performance with the S&S Cycle 551G Gear Drive Camshaft Kit. Designed for engines with 96 to 106 CID and compression ratios between 9:1 and 9.9:1, this kit delivers increased power and improved torque across the RPM range.

Description

The S&S 551G camshaft kit is a bolt-in solution for stock or mildly modified touring bikes, offering enhanced low-end and midrange torque, particularly noticeable from 1,000 to 4,000 RPM. This gear drive system enhances valve timing accuracy by eliminating timing chain lash and slack often found in stock chain setups. By reversing the rear cam's rotation, it creates additional clearance between cam lobes, allowing for higher cam lifts and improved performance. This kit provides a significant boost in power and responsiveness, making it ideal for riders seeking more performance from their motorcycle. The S&S Cycle 551G kit is engineered for reliability and performance, ensuring your engine runs stronger and smoother. Upgrade your ride today and experience the difference!

Features & highlights

• Designed for 96-106 CID engines with 9:1 to 9.9:1 compression.
• Bolt-in cam set for stock or mildly modified touring bikes.
• Increases power across the entire RPM range.
• Improves low and midrange torque, strongest from 1,000-4,000 RPM.
• Eliminates timing chain lash for increased valve timing accuracy.
• Reverses rear cam rotation for greater cam lobe clearance and higher lift potential.
• Made in the USA.

Technical specifications

• Brand: S&S Cycle
• Product Name: Camshaft Kit
• Grind: 551 Series
• Type: Gear
• Intake Open: 17°
• Intake Close: 19°
• Intake Duration: 216°
• Intake Lift: 0.550"
• Intake Lift at TDC: 0.178"
• Intake Lobe Centerline: 91°
• Exhaust Open: 41°
• Exhaust Close: 17°
• Exhaust Duration: 238°
• Exhaust Lift: 0.550"
• Exhaust Lift at TDC: 0.170"
• Exhaust Lobe Centerline: 102°

Important to know

• Material must be removed from the inner surface of the stock gear cover to install.
• A hydraulic press and other professional-level tools are required for installation.
• Cam bearings and gaskets must be replaced when installing new cams.
• S&S recommends using an adjustable pushrod/cover kit.
• Not recommended for compression ratios of 10:1 or greater.
• Installer must check coil bind, valve-to-valve clearance, and valve-to-piston clearance.
• Due to the inherent characteristics of gear drives, you may experience more valve train noise.