14-19 HONDA TRX420R4X4: Big Gun Evo Utility Complete Exhaust The Big Gun Evo Utility Series was designed to deliver raw horsepower and torque gains throughout the RPM range for ATVs and UTVs. Made from 0.049" stainless steel tubing and an aluminum muffler canister, the Big Gun Utility exhaust system is much lighter than stock units. The sleek muffler design also allows for maximum clearance to avoid your exhaust from hitting the rear brake caliper.All EVO Series pipes come will come in stainless steel, with a CNC bracket, Race Tools packing, and spark arrestor screen. No other pipe on the market will come with these accessories included.Lighter than stock.Deep, rich sound.Hand TIG welded stainless steel pipe construction with a brushed finish.Ceramic-coated 18-gauge mild steel stepped or tapered head pipe construction. Big Gun exhausts are NOT LEGAL for sale or use on pollution controlled vehicles in the state of California.