Love th sound of the exhaust and the design.
HMF Competition Slip-On Exhaust
- 29 Reviews
- 39 Questions
Arguably 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
- Designed and tested for dirt bikes and ATVs.
- The Competition Series distributes power evenly throughout the entire RPM range.
- The Competition Series uses a mechanical core to control exhaust pulses and set power levels where they're needed.
- The exhaust shell is made of T6061 Aluminum that weighs substantially less than stock.
- Included with every exhaust are three removable inserts; the Trimax Core technology features three levels of power and sound, allowing you to dictate the type of power and sound you need, when you need it.
- Trimax Stage 1: Uses an insert that restricts sound levels extensively yet produces industry leading power at the approved dB level.
- Trimax Stage 2: Uses a different sound-altering insert that partially lowers sound levels without losing the power increase gained in Stage 3.
- Trimax Stage 3: Acts as an unrestricted core producing high dB levels with industry leading power throughout the entire RPM range.
- Features a black powder coated exhaust shell, stainless euro end cap, rivet bands, and the HMF team sticker for a completely upgraded look.
- Packed with high-performance glass wool packing.
- Includes installation instructions.
- Includes a USFS-Approved Spark Arrestor.
- Includes a 2 Year Limited Manufacturer's Warranty.
- Manufactured in the U.S.A.
The sound builds confidence inside of you and before you know it your in love with your new exhaust. No matter which baffle I choose for the end cap they all sound good. It does make more power you can tell a difference. Thanks HMF!
If you want power, this exhaust is for you! Super loud, it can be heard from a mile away. It made my yfz mean. Also it allows my yfz to pack a punch compared to the stock exhaust. Way to go HMF for a great product!
My son wanted this exhaust for his Honda 4 wheeler. Was so excited when it came and installed quickly. Enjoyed experimenting with the
different pieces that can switch out to change sounds. Looks great.
Switching from a stock pipe to an aftermarket pipe is a must for any atv. i have noticable horsepower and torque. and it sounds and looks awesome.
This HMF competition exhaust was very easy to install on my 2013 YFZ450. Jetting was easy as I only had to move a washer on the need as per the HMF instructions. This exhaust is EXTREMELY LOUD which is what I wanted and has a great tone. Very deep throaty tone. I would defiantly buy this if your looking for a loud and great sounding exhaust.
I would recommend this pipe to ANYONE!!! The sound is great very throaty, it looks amazing, and the power gain you get from this pipe is unbelievable. If your looking for a new exhaust look no further and order this one!!!!!!
I like the sound it makes and extra power it gives. There is a noticeable power difference between the inserts. I had a little snag with installation. The doesn't tuck in under my rear fender all the way like the stock pipe did. I had to re work it some. This was mounted on a 2014 Yamaha Yfz450 r . Overall, I'm happy with it.
Installation took only 20 minutes and shipping was really fast. It makes my 07 raptor 700 faster, better, and meaner looking. And with the options of 3 different style tips you can ride at ur type of riding anywhere. I reccomend it to everyone!
if you want a loud slip on for your ride this is it, the bottom end power was increased ALOT. not too much of a gain on top but still a great slip on, took ten minutes to install. excellent pipe.
I put this on my 2003 ltz400, Gave it alot more power, Sounds great! comes with three exhaust tips to put on. would definitely recommend this to anyone! ships fast to.
The hmf made the bike sound a lot better and it give her a little more get up and go I would recommend buying this to anyone looking for a pipe
Bought to replace stock pipe and it improved performance and sounds amazing.
Great performance, sound great and very loud. Comes with three different tips. Looks good.
I purchased the pipe for a 2007 Polaris Predator. I was very excited when i recieved this. When i recieved this their was a page missing in the instructions so i had to go to the hmf website to get the other page...no big deal. When i tried to install it, the opening on the mid pipe did not fit over the stock header. We had to remove a bushing between the stock midpipe and header, then took the pipe to a local shop to have the opening on the hmf mid pipe wider. After that it did fit and bolted on easily. It does sound nice, and the pipe aint that loud. i was expecting more. It felt like it gave it more power, but not a ton. I would reccomend this pipe if you dont mind putting in a little TLC to get it to fit.
Sounds great on my 08 trx700xx. everything bolted right in place, and was very easy to install. arrived the exact time motosport said it would and had all parts.
I sold some of my bikes to get a trx 450r and i wanted a pipe so i went with hmf and this pipe IS awesome i can tell huge power increase and sounds awesome
I bought this for the 400ex. After I bolted it on and properly jet it. My ATV was ripping, there was definitely an increase in power, It would accelerate faster almost ripping my arms off. Overall the product looked awesome, I just wished they put a metal label instead of the sticker, but it still looks awesome. The finish is really top notch. I just had a problem with bolting it on, I had to drill another hole on the bracket to make it fit on my ATV other than that there was no problem. This exhaust also doesn't need a gasket, just tighten the T clamp and you're good to go. There were also 2 other inserts you can use, mine had the largest insert already bolted for maximum power. If you have sensitive neighbors I suggest you use the other inserts because this thing is loud! You'll be expecting a lot of them knocking at your door.
This slip on exhaust is just...AMAZING! Gives my 400ex much better throttle response, and wow does it scream. This loud exhaust was worth every penny.
i recently installed this slip on with a uni air filter, sparks advanced timing key, and a dynojet kit... this really woke my 2007 400ex up. i didn't expect this much power gain. and the pipe sounds amazing... riding is much funner now...