Paughco 34 Long Slash-Cut Drag Pipes Full Exhaust System For Harley Knucklehead With an outside-the-frame front pipe and a rear pipe that routes in front of the transmission the Slash Cut Drag Pipes from Paughco guarantee classic style and a throaty sound! Features: 1-3/4 diameter pipes An outside-the-frame front pipe Rear pipe routes in front of the transmission Classic style and throaty sound Requires 725D clamps to mount pipes, sold separately