700

The Arctic Cat 700 gets a ton of horse power as a stock system. With the HMF Slip On exhaust installed on the bike, HMF saw a 10-15% increase in horse power. The Penland Series gives an increase on the bottom end which is ideal in rugged terrain.

All HMF exhausts feature:

  • USFS approved spark arrestor included
  • 304 stainless steel flanges, headpipes & S-bends
  • Tough T6061 aluminum or lightweight Carbon Kevlar exhaust shells
  • Volumized, high performance glass wool packing
  • Significantly lighter when compared to stock systems
  • Made in the U.S.A.

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Slip-Ons
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Accessories
Choose your item using the dropdown list below:

Shopping with us is simple and easy, simply click the arrow to the right of the box below to find all available products. Click on the product of your choice, then simply click the "Add to Cart" button. It is that easy!

HMF ATV Exhaust


  • Performance Series
  • Competition Series
  • Penland Pro Series
  • Swamp & Swamp XL Series
  • QRS Series

All Around Performance

exhaustSetting the standard for power and value, the HMF Performance Series has been track tested with over a decade of championships. The specially designed, unrestricted core provides maximum flow and allows the exhaust to increase horse power and torque evenly throughout the entire power curve. The trademark to the HMF Performance Series is the exhaust's sound. With a deep, aggressive sound, you'll typically see a 2-10 dB increase from the stock exhaust system. And with industry-leading end cap and color options, you are sure to add a completely custom look and sound to your machine.

powerEQUAL POWER: 
The Performance Series distributes power evenly throughout the entire RPM range. 

decibals2-10 dB INCREASE: 
Depending on the model, you can expect a 2-10 dB increase over stock. 

featureUNRESTRICTED CORE: 
The Performance Series uses a 2 1/8" non-restrictive core for maximum flow. 

weightLESS WEIGHT: 
The exhaust shell is made of T6061 Aluminum that weighs substantially less than stock.

The Insides

The Performance Series Exhaust system has an unrestricted core surrounded by high performance glass wool packing. 
diagram

3 Exhausts in 1

exhaustArguably the highest performing after-market exhaust on the market, the HMF Competition Series is a pure blend between optimized performance and versatility. The secret to it's power lies within the Trimax Core. This unique triangular core accepts specially designed exhaust inserts that provide the rider the ability to quickly change the power and sound according to the current riding conditions. 

powerEQUAL POWER: 
The Competition Series distributes power evenly throughout the entire RPM range. 

loudnessVARIABLE SOUND: 
Three exhaust inserts are included to give the rider the ability to quickly change the power and sound according to the riding conditions. 

coreMECHANICAL CORE: 
The Competition Series uses a mechanical core to control exhaust pulses and set power levels where they?re needed. 

weightLESS WEIGHT: 
The exhaust shell is made of T6061 Aluminum that weighs substantially less than stock. 

The Inserts

exhaust2Each HMF Competition Series exhaust system comes with 3 inserts that effect the power and sound differently. Stage 1 sets dB levels in the low-to-mid 90's, yet produces industry leading power at that dB level. Stage 2 insert sets dB levels in the mid-to-high 90's and produces substantially more horse power than Stage 1. Stage 3 insert sets dB levels in the high 90's-to-low 100's with industry leading power throughout the entire RPM range. 

stage 1stage 2stage 3

The Power

The Competition Series exhaust system makes more horse power and torque than any other sport exhaust series by HMF. Even with the Stage 1 insert, the numbers clearly show a large horse power and torque increase throughout the entire RPM range. From there, each insert makes more and more power unleashing your machine?s true potential. 

Increasing the Torque

exhaust 2Backed by the ATV legend Mike Penland, the Penland Pro Series was developed for serious off road racers and trail riders striving to achieve more low-end torque. The removable Torque Range Modifier adds a low-to-mid range punch, allowing quads to hook-up better in rough conditions. The exhaust is made of T6061 aluminum and is air-rivoted shut for complete durability. 

torqueINCREASED TORQUE: 
The Torque Range Modifier adds more bottom-end torque for rough conditions. 

loudness2-10 dB INCREASE: 
Depending on the model, you can expect a 2-10 dB increase over stock. 

coreUNRESTRICTED CORE: 
The Penland Pro uses a 2 1/8? non-restrictive core for maximum flow. 

exhaustAN ATV LEGEND: 
Backed by GNCC Champion ?Mighty? Mike Penland. 

The Torque Range Modifier

range modifierThe 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 a sound damping device and you should see no difference in speed and power. It cannot be used with a Quiet Core Insert or Spark Arrestor because only one of these can occupy the space in the exhaust at one time. 

The Insides

The Penland Pro Series features the same unrestricted core that can be found in the Performance Series. Inserting the Torque Range Modifier broadens the available torque to your machine. 
diagram

Utility Power

exhaustThe Swamp & Swamp XL Series set a whole new standard for the horse power, sound, and durability an exhaust adds to a machine. The 304 Stainless Steel, 5" diameter shell gives the exhaust more internal volume producing insane horse power gains. The inlet is TIG welded shut for a completely water tight seal in conjunction with the snorkel kit. Choose the type of sound you need with two different versions; The Swamp Series that controls sound levels to approximately 1-2 dB over stock or The Swamp XL Series with an unrestricted core that will make your machine louder than ever. 

loudnessVARIABLE SOUND: 
Choose either stock sound levels with the regular Swamp Series or full out, unrestricted sound levels with the Swamp XL Series. 

powerEQUAL POWER: 
The Swamp & Swamp XL Series distributes power evenly throughout the entire RPM range. 

The Insides

The Swamp and Swamp XL Series both feature different style cores. As you can see from the diagrams below, the Swamp XL is a completely unrestricted core that gives a bit more power and is much louder than the restricted core of the Swamp Series. 
diagram

Do More. Work Less.

The horse power and torque increase gained from Swamp or Swamp XL Exhaust Series will make your utility vehicle run much better and much more efficiently. The more efficient your machines run, the more efficient you become at getting the job done. Mount this exhaust system and squeeze every ounce of power you can out of your machine.

Sound Regulation

exhaustThe original quiet race exhaust, the HMF Quiet Race Series features an internal mechanical core that controls sound pulses and manages them to a minimum. With race sound regulations becoming stricter, every serious racer needs to consider the dB level of their exhaust. The Quiet Race Series' core will help you meet sound regulations in most restricted riding areas. 

powerEQUAL POWER: 
The Quiet Race Series distributes power evenly throughout the entire RPM range. 

loudnessQUIET SOUND: 
The Quiet Race Series typically is 2-6 dB over the stock system. 

coreMECHANICAL CORE: 
The Quiet Race uses a mechanical core to control exhaust pulses and set power levels where they're needed. 

weightLESS WEIGHT: 
The exhaust shell is made of T6061 Aluminum that weighs substantially less than stock. 

The Insides

The Quiet Race Series features a mechanical core that is designed to minimize sound pulses without losing a great deal of power. The diagram below shows how the core is built and how it directs sound pulses. 
diagram

The Power

Since the Quiet Race Series was primarily designed to meet sound regulations at the track, the horse power is substantially less than the horse power gain from the Performance or Competition Series. If sound is your top concern, the Quiet Race Series might be the exhaust series that will get you everyting you need. 

Quiet Core

With the Quiet Race Series' mechanical core, the HMF Quiet Core cannot be used. When compared to the HMF Performance Series with a Quiet Core installed, the Quiet Race Series is a bit quieter with less horse power.
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