Aftermarket Assassins - Polaris RZR XP Turbo / 4 XP Turbo / XP Turbo S / 4 XP Turbo S Water Cooled Big Turbo w/Pro XP Housing

Water Cooled Turbo w/Pro XP Housing fits all 2016-2021 RZR XP Turbo & Turbo S Models

This water-cooled turbo features larger Pro XP-style housings with an XPT-style center section and tucked water lines for easier installation than OEM Pro XP turbos. The turbo delivers up to 300+ crank horsepower with a built engine and race tunes, providing 28-29 PSI of boost.

• Water cooling keeps charge temperatures extremely cool and consistent, even at boost over 25 PSI
• High-flow 10-blade exhaust turbine with larger bore reduces back pressure and heat buildup
• High-pressure wastegate actuator with new bracket for better support and consistent boost holding
• Fully balanced and professionally set up
• Stock-like driveability with significant power gains
• Lower exhaust gas temperatures (EGT) due to higher exhaust flow
• Lower charge temperatures before and after the intercooler
• Ideal for high-elevation riding where stock turbo struggles

Standard Turbo: Cast steel turbine housing and manifold with improved casting. Uses 11-blade compressor wheel for fast spool, most efficient at 15-25 PSI. Available with 4 PSI wastegate (OEM programming) or 7 PSI wastegate (requires AA big turbo tuning).

Premium Turbo: Stainless steel turbine housing and manifold with greater corrosion resistance. Features upgraded v-band clamp and 6+6 style compressor wheel (lighter, less prone to surge, greater flow potential). Includes 7 PSI billet wastegate and requires AA big turbo tuning. Rated for 15-30 PSI boost pressure.

• Requires high-flow intake tube; OEM will not fit over larger inlet
• AA aluminum intake tube or silicone intake tubes designed for stock turbo may work but may be tight
• Best option: AA intake tube with larger coupler (available as drop-down option)
• Requires AA custom tunes built specifically for this turbo
• 2016 models need 2017-style injectors and upgraded fuel pump for Level 2-5 tunes

Level 2 (91 Octane): 16-17 PSI, 155-160 RWHP (calculated 195 crank hp). Safe tune for any 91 octane fuel.

Level 3 (91-93 Octane): 18-20 PSI, 175 RWHP (calculated 220 crank hp). Strong pull with sustained power.

Level 4 (98-100 Octane): 22-23 PSI, 185-187 RWHP (calculated 240 crank hp). Mix race fuel with pump fuel or use fuel additive.

Level 5 (110 Octane): 25-26 PSI, 200-205+ RWHP (calculated 250-260 crank hp). Runs on 110 leaded fuel. Consider keeping extra O2 sensor or blockoff on hand.

Level 6 (E85): 25-26 PSI, 200-205 RWHP. Runs on cheap E85 fuel (70-85% ethanol). Requires 1200cc injectors and high-flow fuel pump. Motor runs cooler on E85.

Race Levels 5 & 6: 28-30 PSI available for race-built motors with billet crank. Contact manufacturer for custom builds.

All Levels: AA big turbo tunes for PV, AA high-flow intake tube, AA high-flow charge tube, AA S3 clutch kit, AA blow-off valve, free-flowing slip-on exhaust.

Level 4: Pre-airbox intake tube required. Oil catch can and head bolts tightened to 85 ft-lbs (or head studs) recommended for motor safety.

Levels 5-6: Head bolts tightened to 85 ft-lbs or ARP studs to 85 ft-lbs (95 ft-lbs for custom age 625+ studs), spark plugs gapped to 0.020", catch can (Version 3 highly suggested), and pre-airbox intake tube required.

• Complete balanced AA water-cooled turbocharger with Pro XP-spec housings
• Water lines and installation instructions

• Premium Turbo w/7 PSI Wastegate: 112-1024
• Standard Turbo w/4 PSI Wastegate: 112-1079-A
• Standard Turbo w/7 PSI Wastegate: 112-1079-B