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leading to faster turbo spool and improved throttle response
The 66-Piece BoxoUSA designed with the UTV market in mind for your Polaris
Operates at a cooler running temperature
Weight kit includes 3 arms and magnets
Ported Head Kit / Pro R Category_Default Category/SLED/Ski-Doo/GEN5 850 E-Tec Turbo leading to faster turbo spoolWhether you plan to keep your Polaris Pro R naturally aspirated or adding turbocharged performance, a ported head adds airflow with oversized valves, and CNC precision porting. Paired with our custom . 430 lift cam this kit adds 90hp from stock when paired with our exhaust. Huge gains in torque as well which really gets the heavy ProR accelerate faster! STAGE 5 +4 mm intake and +1 exhaust valve Up to 330hp at the crank . 430 Lift cams BMP Custom High