Billet Head Kit / Patriot 9r-850-Boost Catalyst 858 We have extensively tested with

We have extensively tested with the 2017-Up RZR XP Turbo to make the most horsepower possible using our state of the art dyno center

51G Lighter than factory pistons for quicker revs

we add heavy-duty valve springs

Our BMP kit has been proven to produce actual results that make big horsepower

We don't manufacture "placeholder" parts

Billet Head Kit / Patriot 9r-850-Boost Catalyst 858 We have extensively tested withWhen using the Billet head on 850 boost, you must run race gas tunes. You cannot run 91 fuel Billet Head Kit for 2019 & up Patriot 850, 9R, and Patriot Boost Engines Increase cooling capacity for lower running temps which helps maintain peak power Low altitude kits gain 4 5 mid range and peak horsepower High altitude kits gain 8 9 HP in the mid range and 7 8 peak BMP tune is required when running in combination with our pipe We recommend running