• AA standard water cooled big turbo with cast manifold and wastegate actuator
  • AA premium stainless steel water cooled turbo with billet wastegate
  • Rear view of the AA water cooled turbo showing the exhaust manifold and wastegate
  • Pair of black coolant hoses for the water cooled turbo install
  • Dyno chart of AA water cooled turbo Level 4 versus Level 6 E85 on a 2019 Turbo S
  • Blue wideband O2 lead next to black narrow band O2 lead, with model year notes
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Aftermarket Assassins

AA Water Cooled Big Turbo w/Pro XP Housing for RZR XP Turbo & Turbo S

AA Water Cooled Big Turbo w/Pro XP Housing for RZR XP Turbo & Turbo S

112-1079-XPT-A

$1,795.00 USD
$1,795.00 USD
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The Aftermarket Assassins Water Cooled Big Turbo with Pro XP housings is a complete bolt on upgrade for the 2016 to 2021 Polaris RZR XP Turbo and Turbo S, built to make more boost with lower charge and exhaust temps than the factory turbo.

Why it holds up

  • 60 mm billet compressor wheel and 44 mm inducer, versus the OEM 50 mm wheel and 36 mm inducer
  • 10 blade 44 mm exhaust turbine, versus the OEM 11 blade 39 mm, plus larger Pro XP style AR housings for less exhaust backpressure and lower EGT
  • Water cooling keeps charge temps cooler and more consistent for more sustained power
  • High pressure wastegate actuator with a new bracket replaces the weak factory wastegate
  • Gains another 12 to 15 RWHP on pump gas tunes over the factory turbo

Fits

  • 2016 to 2021 Polaris RZR XP Turbo and Turbo S models

In the box

  • Complete water cooled turbocharger with turbine housing, exhaust manifold and wastegate actuator

Good to know

  • Requires a high flow intake tube, since the OEM tube will not fit the larger inlet. The AA aluminum intake tube or silicone tubes made for the stock turbo work but may be tight. The AA intake tube with the larger coupler fits best.
  • The XPT style center section with tucked water lines installs much easier than an OEM Pro XP turbo, though the lines still need some routing.
  • Standard Turbo: cast steel turbine housing and manifold from an improved casting process, with an 11 blade compressor wheel most efficient at 15 to 25 PSI.
  • 4 PSI wastegate: for OEM programming or OEM turbo tuning. 7 PSI wastegate: must be used with AA big turbo tuning.
  • Premium Turbo: stainless steel turbine housing and manifold that resists corrosion and cracking, an upgraded v band clamp, a lighter 6+6 compressor wheel less prone to surge and a 7 PSI billet wastegate. Rated for 15 to 30 PSI and must be used with AA big turbo tuning.
  • On 2019 and newer models a blue O2 lead marks a wideband ECU, so AA needs your O2 lead color when building tunes.
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