Akrapovic Quadseries full stainless steel exhaust system for a Honda TRX450R6 onwards, Akrapovic exhausts are the best quality Quad exhaust on the market, and sadly these are the last few that are available, as Akrapovic no longer manufacture exhaust systems for ATVs! This is sure to improve the power output and the sound of your bike, don't be put off by them being stainless steel rather than titanium, the quality of them is second to none and they're still rather light in weight.