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Polaris Sportsman 450 4x4 Big Tyres

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Dalton DBW450
Sportsman 450
2017-2020 Sportsman 450 4x4
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 re-calibration 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. The instructions have a set up guide that explains how to set up for tire sizes.
Using this kit with smaller than specified tires can hurt top speed.