Polaris ProR800 “tuneup” shimming cylinders to match the D8

Mod stock muffler, quiet Trail Lightweight, L2 muffler all tested with stock ECU and Stages 2.0.2.5 and 4.0

Compare torque and HP curves of the new 900 with our well broken in 850 Patriot.

pump gas, 100 octane and 114 octane tunes for trail riding or lake racing.