The Polaris 850 with its huge 74mm stroke was just asking for a bigger bore and we have done our homework to bring you the 900cc Big Bore

we were the first ones to desgin and bring this type of cooling to the market

It is fully compatible with the factory plastic diverter valve as well as our upgraded Turbosmart 25mm Recirculating Diverter Valve

It comes with rings

extremely sensitive to terrain type and very inconsistent

Dayco Belt / Polaris XTX2288 Category_Default Category/SLED/Polaris/IQ 600 The Polaris 850 with itsDaycos revolutionary XTX ATV belts are engineered for those monster machines powered by 800cc and above engines Specially formuclated high temperature Neopreene with the highest level of aramid fiber loading available delivers track churning performance for the most aggressive riders Faster and more consistent throttle response at high speeds. Quicker throttle response at mid speed acceleration. Greater secondary acceleration at high RPMs. Reduction