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HMF Racing Sport Series Silencer
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    HMF Racing Sport Series Silencer

    Our price: $284.99

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    • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

      -Dan Thomas, CEO and Founder

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      We take pride in offering no hassle returns. In the event of a return, please call, email or chat with us to receive a solution to the problem. For apparel that doesn't fit quite right, Click here to see our Fit Guaranteed Program.

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      To give your ATV a heavy punch and a deep bark, HMF Racing Sport Series Silencer was designed with ATVs in mind. HMF builds their Sport Series Silencers with a 6061 T6 circular canister and straight through baffle system for a boost in performance and the deeper exhaust note HMF has become known for. They’re also known for superior construction, and with the silencers TIG welded aluminum mounting bracket, stainless rivets, and 304 stainless mid pipe, this silencer is no exception. HMF seals the deal with their 2 piece billet end cap that fits their low sound output or spark arrestor inserts.

      So when your ATV is in need of a silencer that can do it all without making compromises, pick up an HMF Racing Sport Series Silencer.

    • Silencer for your 4-stroke sport quads
    • Accepts spark arrestors
    • Accepts tuning inserts
    • Deeper exhaust note
    • Improved power throughout rpm range
    • 304 stainless steel mid pipe
    • T-6 6061 aerospace grade aluminum canister
    • TIG welded aluminum mounting brackets
    • Heavy-duty stainless steel rivets
    • 2 piece billet end cap accepts USFS approved spark arrestor insert and exclusive HMF quick-change low dB Quiet Core
    • Packed with Bristol Core brand pillow packing
    • Includes a USFS Approved Spark Arrester
    • 2-year manufacturer’s warranty

    HMF Racing Sport Series Silencer Reviews

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    1 of 1 people found this review helpful.

    Great Exhaust

    Comments On Aug 28, 2015:I just ordered this exhaust for my kfx450r, it was at my door in 3 days, and took me about 10 minutes to install, super easy. Instantly after installing this pipe, I noticed the gain in bottom end power, it is definitely more snappy. I would recommend this exhaust to anyone. Keep in mind though, it is super loud.

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    0 of 0 people found this review helpful.

    Good but very loud!

    Comments On Feb 14, 2015:This is a great product. I have always been a fan of hmf. It was easy to put on and sounded great after. It gave it better power but it was very loud! Do not buy if you are worried about noise complaints!

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    0 of 0 people found this review helpful.


    Comments On Nov 04, 2014:this pipe is amazing when you get it to work, you need to tune your bike to the pipe witch is a pain if you do not know how to tune a bike but if tuned properly it adds loads of power i love this pipe and it sounds great...the only thing is it mounts up a little funny but its not too bad...totaly worth it!!!

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    0 of 0 people found this review helpful.

    great sound

    Comments On Oct 06, 2014:Easy install sounds and looks great good torque in the bottom end don't forget to rejet the carb sound is a nice deep rumble must have for any 400x

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    2 of 2 people found this review helpful.

    Nice pipe for the price

    Comments On Feb 06, 2014:This pipe is made much better than the FMF pipe that I through in the recycle bin, I didn't even half to remove the spark arrestor it came with because it comes loose in the bag of parts. Fits well and was easy to install once I got the OEM gasket sleeve off which was not much fun, had to take the entire header off and take over to the vice to remove. Looks great and sounds even better, performance was the same as the after market pipe I took off but still much better than the OEM pipe.

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    0 of 0 people found this review helpful.

    2013 yfz450r great deal

    Comments On Nov 10, 2013:installing was very tight to say the least and I could only use the back mounting bolt but once installed and bolted down sounds great. Tuned with a lexx tuner major power and performance gains. I gave this pipe a top rating due to quality construction and a good clean look I highly recommend this for a slip on.

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    1 of 1 people found this review helpful.

    sounds great

    Comments On Aug 05, 2013:I was in the market for a pipe that looked great, but sounded better. The HMF pipe did the trick. I purchased the Slip-on version for my 450er and Im very pleased with the sound and quality of the HMF. I noticed that my low end power has increased a bit, giving me the ability to lift the front wheels off the ground much easier. Great product by HMF, I will buy again.

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    0 of 0 people found this review helpful.

    Awsome sound!

    Comments On Jul 12, 2013:It sounds awesome on my 400ex. The throttle response was much better than stock. It was easy to install it took about 10 minutes.

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    1 of 1 people found this review helpful.

    It's worth the money, buy the pipe

    Comments On Jul 10, 2013:Best sound, and an excellent fit it is worth the money. The pipe really brings out the sound.

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    0 of 0 people found this review helpful.

    Best Sound I have heard

    Comments On Jun 18, 2013:I have just put this on my Honda 400EX about 3 days ago and I will have to say...This is the best sounding exhaust i have heard on a 400ex. Also the power that is added is AWSOME! I will honestly say if you own a 400ex BUY THIS!

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