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S&S CYCLE Cam - 551 Series - Gear Drive - Twin Cam 551 Cam Kit
Regular price $948.95 USD
Category:
- Drag part number: 0925-0959
- Manufacturer Number: 106-4868
- Camshaft gear drive kits increase valve timing accuracy by eliminating timing chain lash and loosely-fit stock chain drive
- 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
- Kits include 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
- A hydraulic press and other professional-level tools are required to install these kits
- 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.
- Designed as bolt-in cam for touring bikes with compression ratio between 9:1 and 9:9
- More power across the rpm range, with improved low and midrange torque
- Can be used with stock pushrods, springs and lifters
- Strongest from 1,000-4,000 rpm
- Made in the U.S.A.
- Product Name: Camshaft
- Type: Gear
- Application: Intake
- Application: Exhaust
- 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°
- Units: Kit
- Riding Style: Street
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