The patented Reflective Sound Cancellation RSC technological innovation gives an extraordinary mixture of Race Inspired Big and Throaty Growl Performance Sound on speed, and No Drone Comfort when touring. These mirror shine polished stainless-steel efficiency exhausts outlasts most competitors, looking plus sounding wonderful all of the way. Features Axle Back Dual Rear Xtreme Exhaust System - Stainless Steel Most Aggressive Sound Level Deep Growl at Idle Bold During Acceleration Screams at High RPMs NO DRONE During Cruise Specifications Size 2.75 4.5 ft....