FMF Power Core IV S/A Exhaust System

Choose a vehicle:

User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.

» Log in to use your Rider Profile Machines
FMF Power Core IV S/A Exhaust System
  • View Larger
  • Video

FMF Power Core IV S/A Exhaust System

Our Price: $179.99$341.99

MSRP: $229.99 - $379.99 - You save up to $50.00 (22% off)

View Product Details

Select type, year, make and model above

Live Help
  • "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

  • Returns

    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.

  • Warranties

    We will stand behind all products we sell with regards to manufacturing defects in workmanship and material. Most products are limited to the manufacturer's warranty. However, we will do everything in our power to take care of the problem.

  • Have questions?

    Live Help (Leave email if after hours)
    Email: sales@rockymountainatv.com
    Call us: 1 800 336-5437
    7am-7pm Mon-Fri 8am-4pm Sat (Mountain Standard Time)

Additional Videos

FMF Factory | Inside Look

How To - Repack A Silencer For Your ATV Or Motorcycle

RM YouTube Channel

Details

    If you’re looking for an affordable, lightweight, race-style exhaust system for your ATV, FMF’s Power Core 4 S/A Exhaust manages to deliver all that in addition to a few extra perks and the legendary build quality of FMF.

    Simplicity is a big part of the exhaust so FMF uses a straightforward oval canister of lightweight aluminum and stainless components. Not only does that provide a very clean looking package, it delivers unhindered exhaust flow that boosts power and provides a weight that is much, much lighter compared to your machine’s stock system.

    But FMF provides refinements too with removable hardware for easy repacking/servicing, a removable USFS approved spark arrestor, and an optional noise reducing end cap insert. So you have the ability and performance to use the Power Core IV anywhere you want to ride.

    Specs:
  • Full exhaust system includes canister, mid pipe, and header
  • Lightweight construction and materials greatly reduce weight vs. stock
  • Easily re-packable and serviceable with removable hardware
  • Uninterrupted exhaust flow improves performance
  • Aluminum alloy oval canister body
  • Stainless end cap, mid pipe, and header pipe
  • Includes removable USFS approved spark arrestor
  • Quiet insert available separately

FMF Power Core IV S/A Exhaust System Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.7 / 5.0
39 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
31
5
3
0
0
Value
5.0 / 5
Durability
5.0 / 5
Ease of Installation
5.0 / 5
Fitment
4.7 / 5
Performance
4.7 / 5
Finish
5.0 / 5
Features
5.0 / 5
Recommend it?
Yes (3)
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
4 / 5
Performance
4 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Good prouduct
This exhaust was easy to install and sounds good. I would recomend this exhaust if you are looking for a good sound and more power.

-m-1996 HONDA TRX 300EX--
October 17, 2017
Ozark, Missouri, AM
Age: 25-44
Purchased
4 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Fmf powercore 4 on 2006 trx90
Night and day difference, my little brother happy with this thing, i like how looks and how sound too, i feel better performance, i have installed on 2006 honda trx90, i recommended to everyone, thanks RM

-m-2006 HONDA TRX 90--
2006 trx90x
2006 trx90x
2006 trx90x
October 7, 2017
Richmond, CA, US
Age: 25-44
Purchased
4 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Sound, looks, and performance all in one package
I purchased this for my daughter's Raptor 80 and it definitely makes it a new wheeler. Install was easy, and the sound is top notch. Visual instructions are included with the pipe, as well as stickers (kids and adults love stickers!) I think the exhaust makes the atv safer for kids, because now the pipe doesn't run right next to the inside of your leg, it's tucked back behind the foot peg a bit. I love it, and you will too!
Way better than stock!
Way better than stock!
September 5, 2016
Hugo, MN, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Awesome
Put this exhaust on my wife's ttr125. Big power gain and sounds great. I put fmf exhaust on all of my bikes. Fmf has never let me down

Machine this part was bought for: 2007 YAMAHA TTR125LE
February 17, 2015
NV
Great value
great for bolt on power. sounds good too. changed the jet and now it climbs hills that were impossible before.

Machine this part was bought for: 2012 KAWASAKI KLX110
September 13, 2014
Baordman , OH, US
Age: 45-64
Nice Pipe
Replaced the stock pipe on my 07 TTR125L. It replaces the whole stock exhaust pipe and silencer. Fits well and looks and sounds great.

Machine this part was bought for: 2007 YAMAHA TTR125L
May 7, 2014
TX
Too loud
I bought a used ttr90 for my daughter that had no spark arrestor, so I fit this spark arrested exhaust to it. It's now forest legal. Fit and finish we're fine with no surprises on the install. The exhaust note is obnoxiously loud though.

Machine this part was bought for: 2000 YAMAHA TTR90
October 11, 2013
AZ
Great System
Bought this FMF Powercore 4 S/A System for my 2003 Honda XR80. I sold the bike, but the system definitely increased the overall power, from top to bottom. I always run FMF, because their quality is great, and everything is made right here in the USA. Definitely recommend.

Machine this part was bought for: 2003 HONDA XR80R
October 11, 2013
WI
Cool pipe for the money
Sounds great on my little TTR110.

Machine this part was bought for: 2012 KAWASAKI KLX110
September 5, 2013
OK
Best bang for your buck
put this on my Honda 300, and I did notice a decent power gain, and this makes my quad sound sick! its a lot lighter than the stock exhaust. I also tuned the carb so it could accept the new exhaust better. so with a stage 1 jet kit and the exhaust my quad rips compared to stock.

Machine this part was bought for: 2000 HONDA TRX 300EX
August 31, 2013
PA
Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 4 questions Browse 4 questions and 6 answers
What jets did you use when you installed this pipe on your Honda TRX 90EX? I doubt the stock jets worked if it flows better.
Dave M on Nov 27, 2017
BEST ANSWER: Well, you don’t need male change on jets, i did and i make rich that thing, i go back to factory, i live at sea level and i have factory jets, 82 main and 42 pilot i think, i spoke to fmf and they tell me i don’t need rejet because of the type of engine(small ccs)
The product detail says it includes can, mid pipe and header. An answer below states its only the slip on. Which is it?
Vincent L on Feb 21, 2017
BEST ANSWER: The item I purchased in the past included everything as described per item details. If you have any droughts on whats not included, call or email the seller. They will gladly answer you questions. You will be happy with their help and with the FMF exhaust. I Love IT, Great buy! Enjoy
Will this fit 1988 honda 4 track 300 2x4?
Angela R on Feb 28, 2017
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2017 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Does this include a header pipe?
A shopper on Oct 22, 2016
BEST ANSWER: Yes this includes the Full exhaust system, canister, mid pipe, and header.
RM Cash ProgramParts Finder