HMF Competition Series

The Competition Series was designed and tested for Sport ATVs and Dirtbikes. It features 3 inserts that effect the sound and power differently, giving you complete control over the type of power and sound you need, when you need it.

4" Aluminum Shell
The Competition Series is built on a durable 6063-T6 aluminum alloy shell, with magnesium and silicon as the alloying elements. It's then coated in a durable black powder that looks great and withstands extreme temperatures.

Three Exhausts in One
The Competition Series features three removable inserts that change the power and sound levels of the exhaust. With a simple insert change, you can dictate the type of power and sound you need, when you need it.

Race Performance
Arguably the highest performing after-market exhaust on the market, the Competition Series is a pure blend between optimized performance and versatility for sport ATVs and Dirtbikes.

The Trimax Core
This is the secret to the Competition's unique power increase. The Trimax Core has a triangular shaped portion that unleashes large horse power and torque gains in specific race fields of the RPM range.