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Brake Parts
Cooling Parts
Drivetrain & Transmission Parts
Electrical Parts
Engines Parts
Exhaust Parts
Foot Controls & Pegs
Frame & Body
Fuel Parts
Handlebars & Controls
Ignition System Parts
Mounts & Hardware
Performance Chips & Programmers
Racing Exterior & Body Parts
Starting & Charging Parts
Suspension Parts
Windshield & Fairings
Repair Manuals
S&S MR103C chain drive camshaft kit for 1999-'06 HD® Big Twins except '06 HD® Dyna® are recommended for modifed engines with larger displacement and higher compression. More torque and horsepower than bolt in cams can deliver. Stock valve springs in 2005-'06 engines may be used with MR103 and HP103 cams. An S&S oil pump and cam support plate, along with a stock 2007 and later style hydraulic cam chain tensioner upgrade is highly recommended for chain drive cams.
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).
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