Yoshimura R-77D Slip-On Exhaust 1380023520 Increases the mufflers open outlet area, resulting in increased exhaust flow while maintaining moderate decibel levels 3 Muffler Options: Stainless, Titanium, and Carbon Fiber. Distinctive dual outlet tip design in Stainless Steel or Carbon Fiber EPA noise compliant slip-on systems are available *NOTE*:&amp;nbsp;May not be legal for sale or use in California or other locales due to state and/or federal anti-tampering laws.