The first Pro Circuit pipe built with bare metal finish, giving it a unique style that sets it apart from all other pipes Durable construction conforms to the natural shape of the motorcycle for exceptional fit and performance Reinforced brackets and stingers prevent cracking, and CNC-machined flange provides precise leak-free fit Distinctive design yields increased horsepower and stronger throttle response throughout the entire rpm range Excellent choice for those who want factory-level high-performance features Features include stamped AKDQ high-quality carbon steel construction Hand-welded and pounded seams Embossed nameplate and CNC-machined exhaust flange