If choosing this muffler with an electric start

13-14 HP gain

These billet intake manifolds are a must have

Must have for any modified machine

Goes well with the Roller Upgrade to reduce friction in your upshift and backshift

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 If choosing this muffler with96mm 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