Use the gears in different combinations front and rear to reduce
torque twist in the rear and overdrive the front axle to help pull you
through climbs easier .
The heavy duty gear set offers improved gear
mesh reducing slop in the drive train. Spiral cut gears offer increased
gear tooth contact and run quieter.
The lower gear range set reduces torque twist
Hardened steel for increased strength and additional weight in the axle.
One set per axle required.