The Motus 180hp RZR kit Pratt & Miller and Motus Motorcycles have teamed up to bring you the ultimate RZR engine swap. They have built a 180 Horsepower 1650cc V4 crate engine for your Polaris RZR XP1000 UTV called the MV4r. They just completed the swap in their own XP 1000 and it turned out sick. […]