S&S Cycle Twin Cam 551C Camshaft Kit - 106-4858

Upgrade your Harley-Davidson's performance with the S&S Cycle 551C Chain Drive Camshaft Kit. This bolt-in cam set is designed for engines with 96 to 106 CID and compression ratios between 9:1 and 9.9:1, making it ideal for stock or mildly modified touring bikes.

Description

The S&S Cycle 551C camshaft kit delivers increased power across the entire RPM range, with a significant boost in low-end and mid-range torque. Experience the strongest performance gains between 1,000 and 4,000 RPM, enhancing your bike's acceleration and overall rideability. These cams are specifically designed for '06 Dyna and '07-'17 Twin Cam models utilizing a hydraulic tensioner chain drive system. Made in the USA with S&S Cycle's renowned quality and precision, this camshaft kit is engineered to provide lasting performance and reliability. Installation requires careful attention to coil bind, valve-to-valve clearance, and valve-to-piston clearance to ensure optimal operation.

Features & highlights

• Bolt-in camshaft kit for easy installation in compatible engines.
• Designed for 96-106 CID engines with 9:1 to 9.9:1 compression ratios.
• Provides more power across the RPM range.
• Improves low and mid-range torque for enhanced rideability.
• Strongest performance gains between 1,000 and 4,000 RPM.
• Compatible with '06 Dyna and '07-'17 Twin Cam models with hydraulic tensioner chain drive.
• Made in the USA.

Technical specifications

• Brand: S&S Cycle
• Product Name: Camshaft Kit
• Type: Chain
• Grind: 551 Series
• 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

• Not recommended for compression ratios of 10:1 or greater.
• Installer must check coil bind, valve to valve clearance and valve to piston clearance.