M series and X-Fires

Level 4 (Tune / Exhaust / Big Bore)

If you have a 2016-Up model with ELECTRIC START please read: The battery box design changed for 2016-Up which will not allow the Full Velocity muffler to fit down into the sled properly

These billet intake manifolds are a must have

13-14 HP gain

Big Bore 935 Kit - '15-Up RZR 900 and '13-Up Ranger 900 Cylinder Core Exchange Options:Opt 3: No Charge - Will ship big bore kit once stock cylinder is received M series and X-Fires96mm Big Bore Cylinder Kit (Fits Polaris 900 RZR & Ranger 900) Unleash the full potential of your Polaris 900. This 96mm Big Bore Kit delivers massive increases in both horsepower and torque, pushing your machine to 100+ crankshaft horsepower. That is an incredible jump from the stock 74 HP RZR motor, and an even bigger leap for the 60 HP or 68 HP Ranger motor. We take a stock 900 cylinder, precision bore it, and Nikasil plate it to our exact