472-DBW450

Sportsman 450

28” and larger tires (can also be used with some of the heavy 27” mud tires).

A lot of power can be lost from adding big tires. This kit is for recalibration of the rate of shift for 28” and larger tires. Improved acceleration and response with extra large tires.

Includes a new primary spring, custom helix, and a new secondary clutch spring. Setup guide includes instructions for various tire sizes.

Using this kit with smaller than specified tires can hurt top speed.