Follow our step-by-step guide to installing an MBRP muffler on a Polaris RZR. Easy to follow, quick, and perfect for anyone looking to upgrade their RZR’s performance and sound. #PolarisRZR ...

The continuous research we do with '11-'14 Mustang GTs has proven that Coyote engines thrive on airflow. Yes, we've seen mild-to-wild performance gains when air to these new bullets is improved with ...