Vance and Hines Byron Hines wanted to make the best-performing pipe for your Harley-the Pro-Pipe 2-Into-1 system is it
Pro-pipes produce up to 17 percent more horsepower than stock pipes
Hand-made race collector and specifically designed head pipes produce maximum exhaust gas scavenging
A special baffle system for that just-right sound
True full-length 220 degree heat shields are included, unlike other 2-Into-1 systems