COBRA Black Slashcut Mufflers 6003B Quantum-X Helmet Interior Pad — S The headpipe merges into a

The headpipe merges into a large 2-1/4" collector that steps up to a 2-1/2" core

2003-2005 Yamaha WR 450 F - - 2003 Yamaha YZ 450 F - - 2001-2005 Yamaha YZ 250 F - - 2001-2005 Yamaha WR 250 F - - 2000-2005 Yamaha YZ 125 - - 2000-2005 Yamaha YZ 250 - - 2000-2002 Yamaha YZ 426 F - - 2000 Yamaha WR 400 F

The addition of the internal Structural net and Peripheral Belt further strengthens the shell with minimal increase to weight or thickness

Sliding chin vent actuating mechanism is thicker and easy to use with gloves

COBRA Black Slashcut Mufflers 6003B Quantum-X Helmet Interior Pad — S The headpipe merges into aGreat performance, price and sound are the hallmarks of these 3 inch mufflers They come with 2 inch replaceable baffles, and chromed billet tips that can be located in three positions: slash cut, slash down and one in between Constant velocity baffle design for improved performance Baffles use a high density bonded fiberglass wrap and stainless steel mesh, which contributes to a better sound quality Mufflers use the stock mounts and fit the stock head