A four-gear set is required for gear-driven cams that do not come with secondary cam gears; includes two secondary cam gears, outer cam drive gear, outer pinion drive gear and mounting hardware
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
Made in the U.S.A.
NOTE: It is the installer's responsibility to check all clearances and follow all procedures in the S&S instructions and Harley-Davidson manual.
33-4285 - Twin Cam Models 07-17 & 06 Dyna Glide
33-4275 - Twin Cam Models 99-06 Except 06 Dyna Glide