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2011 Yamaha YFZ450R

HMF Performance Series Slip-On Exhaust - Brushed

HMF Performance Series Slip-On Exhaust - Brushed - Main
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HMF Performance Series Slip-On Exhaust - Brushed - Main
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$279.99
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Product Description

  • The HMF Sport Series exhaust is specifically designed to maximize power of your ATV.
  • HMF designed an open non-restrictive flow core to produce maximum power and torque throughout the entire power band.
  • HMF developed the Sport Series slip on exhaust with a T6 aluminum sleeve and 304 stainless steel components to offer a slip on exhaust that is affordable without the sacrifice of quality. HMF also selected these materials to save weight and provide long term durability.
  • The HMF Sport Series exhaust includes a USFS approved spark arrestor so your not limited in your ATV adventures.
  • HMF constructed the Sport Series exhaust with a removable end cap to easily replace packing and perform maintenance.
  • HMF designs and builds the Sport Series slip on exhaust in the USA.
  • HMF includes a two year warranty on the Sport Series slip on exhaust.

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  • Customer Reviews
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(45)
4.7 out of 5 stars
5 star   37
4 star   6
3 star   1
2 star 0
1 star   1
Write a Review
“ pretty good pipe but it is extremely loud and there are alot of parks that have a decibal requirement... ”
brraaapp Location: aurora,IN
“ I love this muffler! i have had it for a while now and havent noticed anything bad about it. ”
jemerson383 Location: Franklin, PA
“ I have a 1998 Yamaha Warrior 350 ATV, this slip on fit perfect, it looks great and sounds awesome, ga... ”
Hogmanst Location: Edison, NJ
1-10 of 45
Overall
Good muffler
put on a 660 raptor sounds good. will update when i re pack it.
Overall
Great purchase
I put this exhaust on my kfx 400 it definitely has noticable power change and it's also very loud, also I recommend getting a CDI box. no regrets on this at all.
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Top 1000 Contributor
Location: aurora,IN
Itsa HMF
pretty good pipe but it is extremely loud and there are alot of parks that have a decibal requirement and even with the quiet core its still to loud. If i were to buy a another pipe it would be the big gun eco system they sound great and you can still ride where ever you want. And i didnt really notice a difference in power just noise.
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Location: pennsylvania
Great exhaust
love it! sounds as good as full system. very loud,worth the money i would tell anyone this is a best buy. around 100 db's adds some power. fairly easy to install.
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Top 1000 Contributor
Wow
Sounds like a BEAST!
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Power
Style
Top 1000 Contributor
Location: Franklin, PA
Love it!
I love this muffler! i have had it for a while now and havent noticed anything bad about it. It has a great sound to it, very loud when you get on it. as soon as i put it on and rode with it i noticed the power that i got from it. Also it was very east to install. i just took the old one off and slipped this one on and changed the jetting and was good to go! i would tell any one who was looking at this muffler to get it!
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Great pipe
i just got this pipe the other day and it sounds amazing!!!! i never thought it would be so loud and it give it more umpth if you know what i mean
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Location: Edison, NJ
Great Exhaust
I have a 1998 Yamaha Warrior 350 ATV, this slip on fit perfect, it looks great and sounds awesome, gave me some extra boost and it was easy to install. HMF is a great product, you wont be disappointed. Motosports ships fast too and the price is right.
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Ease of Installation
Performance
Power
Style
i just installed hmf on my ltz400 and let me tell you. This exhaust is amazing. It looks and sounds awsome. It has a nice deep throaty sound and is very loud. I would definetly recommend this exhaust to anyone
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Location: Fletcher, NC
Great muffler for the money
This is a great aftermarket muffler. It has a good sound and looks good on my Raptor 350. With the exhaust,a uni clamp on filter, and jetting the carb has really woke it up. Great power through all the ranges.
1-10 of 45
Total Questions (37)
Questions with answers:
  37
Questions without answers:
0
Have a question?
“ I have a 2006 ltr do i need to buy a electronic air/fuel optimizer also?... ”
Suzuki18
“ Will this fit a 2010 yfz 450x?... ”
Deeter Location: Pennsylvania
“ Is there anything different between polished and brushed besides looks?... ”
Norris
1-10 of 37
beadure 2 years 12 months ago
All i need?
if i buy this do i need to buy any other parts to make it go on my 350 raptor ?
MotoSport Staff
2 years 11 months ago Location: P+RTLAND
Nothing else is really required. You may want to look into a jet kit just to be on the safe side.
Answer this Question
Suzuki18 Over 3 years ago
I have a 2006 ltr do i need to buy a electronic air/fuel optimizer also?
MotoSport Staff
2 years 12 months ago Location: P+RTLAND
Normally your bike will adjust with just the slip on, but if you go with a complete exhaust it's recommended to get a air/fuel optimizer.
Top 1000 Contributor
2 years 10 months ago Location: Franklin, PA
No you dont. you just to change the jetting in the carb.
Answer this Question
Deeter Over 3 years ago Location: Pennsylvania
Will i have to get a programing chip for my 2010 yfz 450x?
MotoSport Staff
2 years 12 months ago Location: P+RTLAND
You dont have to, but for max performance it's recommended.
Answer this Question
Deeter Over 3 years ago Location: Pennsylvania
Will this fit a 2010 yfz 450x?
1.It is fuel injected, so i am not sure if that will make a difference. 2.Will i have to drill holes to make it fit or will it fit without any mods?
Over 3 years ago
if u select ur quad where it says select bike or quad it should bolt right up and the fuel injected should do it all for u u shouldnt have to rejet i think it will do all that for u just put the exhaust on and u should be good.
MotoSport Staff
2 years 11 months ago Location: Tualatin
if it comes up on the "ride selector", that means it will fit that mode you are looking forl. no you would not need to drill any holes or make any modifications, it is a model specific exhaust.
Answer this Question
Norris Over 3 years ago
Is there anything different between polished and brushed besides looks?
also if you get it in black does it cost more?
MotoSport Staff Expert
Over 3 years ago Location: USA
Looks is the only difference. There's no power gains between the two.
2 years 11 months ago
it is only different by looks and yes black cost 20 or 30 bucks more
Answer this Question
oldskoolkid Over 3 years ago
How do I order the hmf slip on in black?
Expert MotoSport Staff
Over 3 years ago Location: USA
MotoSport.com can special order you in the black HMF Exhaust, but you'll have to give us a call, 888-676-8853.
Answer this Question
mushroom Over 3 years ago
Head pipe?
can i get the matching head pipe for this slip on? how much would it be if so
Expert MotoSport Staff
Over 3 years ago Location: USA
What type of quad do you have???
Answer this Question
Diss42jr Over 3 years ago
Do I have to rejet the carb when I buy the exhaust? If I don't will it mess up the engine?
this is on my 300ex
MotoSport Staff Expert
Over 3 years ago Location: USA
A typical slip on installation doesn't always require the quad to be re-jetted. But if you install the pipe and notice it not running properly, than jetting may be needed. I would check out HMF jetting specs on their website: http://hmfracing.com/jetting-recommendations
Answer this Question
Diss42jr Over 3 years ago
When I buy this do I just bolt it on and ride or do I have to repack it?
MotoSport Staff
Over 3 years ago Location: P+RTLAND
Yes, you will just bolt it up. The exhaust comes packed from the factory. Depending on what bike it's going on you may need to check your jetting.
Top 1000 Contributor
2 years 10 months ago Location: Franklin, PA
yes, just bolt it on. But you must change the jetting in the carb or else the quad wont run right.
Answer this Question
Top 1000 Contributor
hhhhhhhhh Over 3 years ago
When do I know when to repack the pipe?
Over 3 years ago Location: NY
usually btw 10-20hr but if the pipe starts to get louder and you experience power loss its time for a repack
Answer this Question
1-10 of 37

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