Street Grand Prix


  • 4” Body with billet aluminum MotoGP inspired end cap
  • Race-Inspired high performance baffle with dual density muffler packing
  • Increases performance and replaces the timid stock sound with a Deep, Throaty Roar
  • Part # 14-1004
  • Not available for sale in California

Out of stock

SKU: 14-1004 Category: Tags: , , , , , , ,


The Grand Prix Slip-On is a great way to amplify the sporty features of the Harley-Davidson Street 500 and 750. Inspired by the MotoGP race circuit, the Grand Prix Slip-On is guaranteed to stand out with its chrome hex end treatment nesting inside a contrasting black ceramic coated billet end cap.

Don’t be fooled by its good looks, the Grand Prix Slip-On is not just for show. Inside the 4” muffler body is a free flowing, stainless core baffle wrapped in dual-density packing. Engineered to bring the Street’s potent power plant to life, the Grand Prix Slip-On delivers increased performance, and a sound so deep you can feel it.

As with all Firebrand products, the Grand Prix Slip-On features Firebrand’s hand crafted, high quality fit and black ceramic finish.