AA Water Cooled Big Turbo | RZR XP Turbo / Turbo S

Aftermarket Assassins Water Cooled Big Turbo With Pro XP Housing For Polaris RZR XP Turbo / Turbo S   Our proven turbo now uses larger AR housings like the Pro XP turbo for even more flow and less back pressure.  We went to the larger housings after testing and finding with the correct tune adjustments this turbo can spool just as fast as our standard water cooled turbo offered for years.  The biggest difference from our previous turbo is the reduced exhaust backpressure (even further) which helps resist a knock event (timing retard/slight drop of power) on the same fuel.  This is especially true for higher pressure tunes over 24-25psi and where you will see the most difference.   If you build your motor with a billet crankshaft and use our wastegate with 15-17psi crack pressure, this turbo will build up to 29-30psi of boost on our race tunes.  However, it will also trail ride on a level 2 tune and be wicked fun/reliable for those just looking for a good replacement turbo. New Pro XP