S&S CYCLE Camshaft Kit - 551G Gear Drive - Twin Cam '99-'06

Features

• Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression, this is a bolt-in cam set for stock or mildly modified touring bikes
• Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes making higher cam lifts possible
• More power across the rpm range, with improved low and midrange torque, strongest from 1,000-4,000 rpm
• Increases valve timing accuracy by eliminating timing chain lash and loosely fit stock chain
• Material must be removed from 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 that adjustable pushrod/cover kit be used
• Not recommended for compression ratios of 10:1 or greater
• Kit includes inner gears, outer gears, inner and outer bearings, gaskets and instructions
• Made in the USA

Notes

• 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.
• Not for '06 Dyna.
• Some models will require high-lift springs

CALIFORNIA WARNING: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. Not legal for sale or use on any EPA pollution controlled motor vehicle.

Specs

Product Name	Camshaft Kit
Type	Gear
Application	Exhaust / Intake
Grind	551 Series
Intake Lift	0.550"
Intake Open	17°
Intake Close	19°
Intake Duration	216°
Intake Lift at TDC	0.178"
Intake Lobe Centerline	91°
Exhaust Lift	0.550"
Exhaust Open	41°
Exhaust Close	17°
Exhaust Duration	238°
Exhaust Lift at TDC	0.170"
Exhaust Lobe Centerline	102°
Units	Kit
Riding Style	Street