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Tech

Installation

Is one of your exhaust series better for my machine vs. another?

The answer to that question depends on your machine, how you ride, where you ride, etc.  Most machines HMF offers exhaust for will not include every series created. You wouldn’t... read more

Is there really a difference between installing a slip on HMF exhaust and a full system?

Absolutely!  When we develop exhaust systems we have to look at a lot of different variables including head pipe diameter, exhaust system total length, backpressure, resonance, space restrictions, heat management,... read more

I purchased a slip on exhaust some time ago and now want to go to a full system. Can I just get the full system head pipe from HMF?

In most cases the answer is no.  When a slip on exhaust is designed, we must work within the constraints of the factory head pipe and connection.  A full HMF... read more

Why don’t I see exhaust or equipment available for my vehicle?

Unfortunately we don’t always have the time or resources to design and test on all machines.  We do our best to keep up as new and improved machines are released... read more

Competition Series | Inserts

The HMF™ Competition Series exhaust was designed and tested for sport ATVs.  The internal triangular core, Trimax, is the heart of the Competition Series.  The Trimax Core technology features 3... read more

Using wire or rope with my Exhaust Installation?

So let's get this straight.  I can use a rope or long piece of wire to help me with the installation of my HMF exhaust system? The answer is yes. Many of... read more

What can I do with the snorkel system?

Many riders are modifying their machines for deep mud riding as the popularity of the sport increases. When getting down and dirty, the first modification for most quads are snorkels... read more

How do I install my Competition Series inserts?

The HMF Competition Series exhaust features 3 different inserts that adjust the power and sound.  When you received your Competition Series exhaust, the Stage 3  insert was installed, with stages... read more

How do I install my Quiet Core and Spark Arrestor?

Every HMF exhaust comes with a U.S.F.S. Spark Arrestor uninstalled. The installation process for the Spark Arrestor is the same for the Quiet Core and should only take a few... read more

How do I install my Torque Range Modifier?

The Torque Range Modifier (TRM ) is an insert that broadens the available torque range of the machine allowing for better "hook up" in certain conditions. The TRM is not... read more

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