The 4-inch Knockout Slip-ons produce deep, throaty, race-inspired sound quality from idle to full throttle. MagnaFlow’s signature Pro-Flow, 3-step perforated core delivers torque, power and performance you can feel through the power band. Knockouts feature distinctively channeled gloss black, aluminum end caps that instantly upgrade the stance of your bike. Knockouts easily bolts on to stock or MagnaFlow head pipes and are available in show chrome or deep black finishes with gloss black end caps. All mounting hardware is included.
If you’d like to know more about the Knockouts or MagnaFlow’s other cool products, you can either contact your local parts dealer, or visit MagnaFlow online at magnaflow.com