The Yoshimura Alpha Signature Series features the highest level of fit and finish due to improved production tolerances Iconic Tri-Oval muffler design heritage with a revised muffler shape for improved ground clearance Better use of internal volume to produce the famous deep, distinct Yoshimura exhaust note Muffler features a large diameter carbon fiber end cap and integrated, draw-formed slash-cut muffler outlet Muffler design is optimized for durability and ease of servicing CARB/EPA tail-pipe emissions compliant All applications are marked with appropriate EPA noise emissions labels Certified by an independent laboratory for EPA noise compliance