S&S 551 Series Cam Kit Gear Drive High RPM Harley Big Twin Cam 2006-17
Designer: S&S Cycle
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- $836.94
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- $836.94
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SKU
106-4868
Free delivery to the Lower 48 States
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Fitmet Questions? Call us at 610-754-8500
BRAND NEW
PART# 106-4868
Fits 06-17 Big Twin models
Gear drive
Camshaft gear drive kit increases valve timing accuracy by eliminating timing chain lash and loosely-fit stock chain drive
Designed as bolt-in cam for touring bikes with compression ratio between 9:1 and 9:9
Reverses the rear cam's direction of rotation, providing additional operating clearance between cam lobes; as a result, higher cam lifts are possible with the gear drive kit
More power across the rpm range, with improved low and midrange torque
Kit includes cams, inner gears, outer drive gears, inner and outer bearings, gasket and instructions
Material must be removed from the inner surface of the stock gear cover to install S&S gear drive cams
Strongest from 1,000-4,000 rpm
A hydraulic press and other professional-level tools are required to install kit
Made in the U.S.A.
Cam bearings and gaskets must be replaced when installing new cams.
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.
Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance.
GRIND - 551 SERIES
INTAKE LIFT AT TDC - 0.178"
INTAKE OPEN - 17°
INTAKE LOBE CENTERLINE - 91°
INTAKE CLOSE - 19°
INTAKE LIFT - 0.550"
INTAKE DURATION - 216°
EXHAUST LIFT - 0.550"
EXHAUST DURATION - 238°
EXHAUST LIFT AT TDC - 0.170"
EXHAUST OPEN - 41°
EXHAUST LOBE CENTERLINE - 102°
EXHAUST CLOSE - 17°