S&s Cycle 551g Gear Drive Camshaft Kit

Upgrade your Harley-Davidson's performance with the S&S Cycle 551G Gear Drive Camshaft Kit. This kit delivers enhanced power and reliability for your 96 to 106 CID engine, making it perfect for stock or mildly modified touring bikes. Experience the difference a precision-engineered camshaft can make.

Description

The S&S 551G gear drive camshaft kit is engineered to boost your engine's performance across the RPM range, with a significant improvement in low and mid-range torque. This kit is designed for engines with 96 to 106 CID and a compression ratio between 9:1 and 9:9. By reversing the rear cam's rotation, the 551G kit allows for greater cam lift and increased valve timing accuracy by eliminating timing chain lash. Expect stronger performance from 1,000 to 4,000 RPM. Installation requires professional-level tools and modifications to the stock gear cover. This kit enhances engine efficiency and delivers noticeable gains in power and throttle response.

Features & highlights

• Increased low and mid-range torque for improved throttle response.
• Optimized for 96-106 CID engines with 9:1 to 9:9 compression ratios.
• Gear drive eliminates timing chain lash for greater valve timing accuracy.
• Reversed rear cam rotation allows for higher cam lifts.
• Bolt-in cam set for stock or mildly modified touring bikes.
• Made in the USA.

Technical specifications

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

Important to know

Material must be removed from the inner surface of the stock gear cover for installation. A hydraulic press and other professional-level tools are required. Cam bearings and gaskets must be replaced during installation. S&S recommends using an adjustable pushrod/cover kit. Not recommended for compression ratios of 10:1 or greater. The installer must check coil bind, valve-to-valve clearance, and valve-to-piston clearance. Due to the nature of gear drives, increased valve train noise may occur. Kit includes inner gears, outer gears, inner and outer bearings, and gaskets. Instructions are included, but professional installation is highly recommended.

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