COBRA Pro Chamber Headpipes - Black USE17-18 AFTRMRKT MUFFLRS 6255RB VX-Pro4 Stars & Stripes Helmet 5-inch heat shields covering 1

5-inch heat shields covering 1

for those who think loud just isn't good enough Start as round 4" tubes

2022 Yamaha YZ 250 - - 2022 Yamaha YZ 125 - - 2021-2022 Yamaha YZ 250 FX - - 2020-2022 Yamaha WR 250 F - - 2019-2022 Yamaha WR 450 F - - 2019-2022 Yamaha YZ 450 FX - - 2019-2022 Yamaha YZ 250 F - - 2018-2022 Yamaha YZ 450 F

The frequency and location of the perforation patterns in the high-flo cores creates significant sound scattering in the mid frequencies

The included siphon kit integrates the auxiliary tank with the bike’s main tank

COBRA Pro Chamber Headpipes - Black USE17-18 AFTRMRKT MUFFLRS 6255RB VX-Pro4 Stars & Stripes Helmet 5-inch heat shields covering 1For the Milwaukee Eight motor, Cobra modified their PowerPort by enlarging it to become a pulse chamber that accelerates exhaust scavenging to produce the kind of power riders expect The round shape, bulging from between the heat shields gives a clue to the real power potential it offers Stock H D mufflers will not work with this head pipe because of the stock mufflers internal construction. Most aftermarket mufflers will fit