Exhaust

Bolting on a Factory Fatty will enhance the powerband throughout the range. With increased horsepower and torque, you will not be sacrificing power to gain that factory look and feel. This is the same pipe many of the top supercross and motocross riders are using today.

• Used by Yamaha of Troy, Team KTM and Team Yamaha's David Vuillemin.
• Lighter 20 gauge steel used for the body of the pipe.
• 19 Gauge steel used for the header portion.
• Hand pounded seams for smooth flow transitions.

Constructed with two different thicknesses of U.S. steel, 19 gauge for the header portion for optimum strength and durability, and thinner 20 gauge - the body and rear cone section for increased weight savings. The thinner steel also yields a slight increase in power (up to .5 hp) due to more efficient wave resonance. All seams are hand pounded after the stamping process to give it a smoother transition between sections and a factory look. This pipe comes with a raw, unplated, oiled finish. The Factory Fatty...factory equipment for the general public.

Item ID: 021043
Type: Pipes
Carb Warning: no
Weight: 5.0 lbs.