Every Yoshimura exhaust product is made by hand to the highest quality standards. Engineered for the demands of the off-road world. Aggressive, intelligently designed, asymmetrical shape. Allows maximized muffler volume to help manage sound, add performance, weight reduction and provides more clearance for tire and brake caliper. End cap design improves durability, and eases servicing as compared to other sandwich mounting designs most commonly found in the industry. Precision Taper Fit (PTF) insert ring makes it easy to install and remove sound inserts and spark arrestors.