EVO Polaris RZR Pro R Silicone Inlet Boot Color:Black For 31" tire and smaller

For 31" tire and smaller choose Boss03-2 Helix

The factory also makes boost fall off a cliff over 8000 RPM

WS-CA-DEF-70 - Instructions

Those nets that come with your stock machine might keep leaves or branches from blowing into your cab

EVO Polaris RZR Pro R Silicone Inlet Boot Color:Black For 31" tire and smallerEVO Polaris RZR Pro R Silicone Inlet Boot With tunes and big power, having maximum flow with minimal restriction is critical. EVP Silicone Inlet Boots for the Polaris RZR Pro R drastically cut down on the turbulence thanks to the smooth, decreasing radius intake. Unlike cheap imitations, EVP Silicone Inlet Boots are constructed from five ply wire reinforced, high durometer silicone rubber that will not cave in under high vacuum and high heat.