625G Gear Drive Camshaft Kit for 1999-'06 Big Twins except '06 HD<sup>®</sup> Dyna<sup>®</sup>

625G Gear Drive Camshaft Kit for 1999-'06 Big Twins except '06 HD® Dyna®

Item #: 33-5180
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$729.95
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The 625G is designed for 95 inch or larger engines with compression ratios between 10.0 and 10.75:1.
Includes 625G gear drive camshaft set and inner gears, outer cam drive gear kit, and camshaft installation kit for 1999-2006 Harley-Davidson® big twin models (except 2006 Dyna®).

 

 

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These cams are not bolt in and will need special valve springs. Pinion shaft run-out must be checked before installing S&S® gear drive cams. A hydraulic press and other professional tools are required to install S&S gear drive cams. Additionally, material must be removed from the inner surface of the stock gearcover. The stock crankcase will require clearancing for S&S .625", .640", and .675" lift cams. S&S recommends that gear drive cams be installed by a professional mechanic. New cam bearings and a new gearcover gasket are required to complete cam installation. Gear drive cams for 1999-' 06 models require the use of ball bearing style cam bearing rather than the stock roller bearing. Roller bearings have more internal clearance which can cause excessive gear lash and increased noise. The correct parts are provided in S&S Camshaft Installation Kit, part #106-5896. Due to the inherent characteristics of gear drives, you may experience more valve train noise with gear driven cams. Oversized and undersized gears are available to help achieve correct gear lash. We have found that with 160 lb. of valve seat force, the S&S gear drive cams will perform well up to 6200 rpm. If higher rpm is anticipated, valve springs that provide higher seat force should be used. Not legal for sale or use on CA or EPA pollution controlled motorcycles.
Disclaimer

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.