Fmf exhaust Factory Fatty Yamaha YZ 65

Fmf motorcycle exhausts for 2-stroke engines Yamaha YZ 65

Motorcycle exhaust Fmf for minicross 65 Yamaha

The Factory Fatty motorcycle exhaust recalls the "works" or cone pipes once used by Factory Teams and shares many of the same characteristics with its craftsmanship and quality of materials

Broaden and smooth the power curve while increasing gains across the power band, lower, more mids, and more over-rev

Regardless of the type of driving you do, Fatty has the perks you are looking for

Lighter 20 gauge steel used for the tube body

19 gauge steel used for the muzzle part

Hand hammered seams for smooth transitions