Make sure the world knows you're riding a Harley. These 3-1/2" slip-on mufflers from Rinehart Racing deliver - this isn't no moped sound and great looks to boot. These mufflers were designed for Harley-Davidson Touring motorcycles using the same race-proven baffle design as Rinehart Racing's True Dual Systems, meaning they're precision-machined in America to work with OE head pipes or match perfectly with their Slimline Dual Headers. If you're installing on catalyst-equipped OE pipes, there's no tuning needed or required. You can also mix and match your style, as these 3-1/2" slip-ons are available in chrome or black with matching or contrasting end caps. Your bike, your choice. Give your bike rumble and roar with Rinehart Racing's distinct sound that stands above all others The same highly sought-after muffler and baffle design as our True Dual systems in an easy to install and economical package Designed to work with OE head pipes or match perfectly with our Slimline Dual Headers 3-1/2" Mufflers No tuning required nor recommended when installing on catalyst-equipped OE pipes Slip-On mufflers will not fit with Rinehart Racing stepped headers. For complete exhaust system, pair these mufflers with Rinehart Racing header pipes: 138-914 Chrome or 138-915 Black