Baker Drivetrain Main Drive Gear Tapered Roller Bearing Kit For Harley 6 Spd Cruise Drive Trans The cartridge-type bearing that supports the primary drive gear is the weakest point of a Harley six-speed cruise drive transmission. With this Baker kit, a tapered roller bearing that can withstand greater torque loads takes the place of the original bearing. Additionally, the tapered roller bearing allows for accurate bearing endplay setting for optimal lifetime and durability. By upgrading the problematic self-aligning main drive gear bearing to a tried-and-true opposing tapered roller bearing pair, you and your motorcycle will stay on the road and out of the shop. Features: Provides everything you need to eliminate the all too common stock main drive gear bearing failures Double roller bearings prevent mainshaft bearing failure Includes: Baker double tapered roller bearing assembly Replacement HD main drive gear Replacement countershaft bearing Bearing adapter installation cup, gaskets, seals, spacers and retaining ring Made in the USA