Gear set reduces the rpm at highway speed, adding life to the motorIncludes gears, trapdoor, shifter drum, shifter forks and derby coverRedesigned shift drum and detent plate supply improved geometrics for smoother shiftingGears are full-width for uncompromised torque capacity and strengthFor ease of installation use existing main drive gear set (you do not have to remove the main 5th gear from the case)Made in the U.S.A.NOTE: It is recommended that for 94 applications the newer style gears (95-02) be used (OEM #35034-94 mainshaft 5th gear and 35633-94 5th gear countershaft). Using earlier gears may cause a gear whine, but will in no way cause a mechanical problem.NOTE: Installation of this kit requires the removal of some case material and H-D special tools.