The Mini PowerCore 4 exhaust system is the best bang for your buck performance exhaust for your mini moto! Each Mini PowerCore 4 exhaust system features a Hi-Flo stainless steel core and formed end caps, an aircraft grade aluminum canister and a durable stainless steel header. It's pounds lighter than stock and produces the kind of power you can feel!
Ideally suited for mini-moto and offroad bikes with the stock cylinder bore
Stainless steel Hi-Flow header with better flow over the stock design for improved throttle response and greater engine power output, especially at low RPMs
Hi-Flo muffler core and end cap
Choose between a straight-through design with no spark arrestor or a spark-arrested version for ORV trail use
Pounds lighter than stock
Made in the USA
Product Note:
Specification
Details
Bore
Varies (make selection above)
Country of Origin
USA
Header
Hi-Flo
Header Construction
Stainless Steel
Muffler End Cap
Stainless Steel
Muffler Sleeve
Aluminum
Size Over Standard
Varies (make selection above)
USFS Approved Spark Arrestor
Varies (make selection above)
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
Wow...she is barking...great exhaust for the price..made my bike have so much more power and sounds so good...most definitely one of the best upgrades for the money!
One of the best mods for your bike!
By Ricardo P. on
Verified Purchaser
Great exhaust... FMF powercore 4 is the way to go if you on a budget and you get your bike to bark loud...and the power you can feel on the throttle is real!
FMF Mini PowerCore 4
By Jake on
Verified Purchaser
Bought an FMF exhaust for my 2000 xr100. The exhaust fit perfect.
FMF Pipe KLX 110
By Steven T. on
Verified Purchaser
Fit perfect! No issues at all!
Perfect fit
By Clint C. on
Verified Purchaser
Perfect fit and definitely added power and good sound.
Excellent
By F. on
Verified Purchaser
Excellent fit, very fast shipping.
FMF Mini PowerCore 4 Exhaust
By Shawn B. on
Verified Purchaser
Good price and great support.
Installing the new FMF Powercore 4
By Bradley E. on
Verified Purchaser
The FMF pipe bolts up great. The stock heat shroud didn't bolt up that well. Had to do a little drilling on the brackets to get it to line up. Other than that I was pleased with the new pipe.
Great Part and Service
By Kirsten O. on
Verified Purchaser
The exhaust system was just what we needed, we've installed it, and our son is happily riding again.
Great FMF quality exhaust for little bikes!
By Garland C. on
Verified Purchaser
Great little bike exhaust. Fit right up perfectly. Added a good look and some sound. And also I am sure a little bit of power.
Mini PowerCore 4
By Brandon D on
Verified Purchaser
Received early perfect fit, adds horsepower and great sound as well.
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Will this pipe work well with the bbr big bore kit ? Or is there a better 1 I need to get for the big bore kit ?
If FMF makes a big bore exhaust for your particular machine, we recommend you get the FMF Big Bore Mini PowerCore 4 Exhaust System as it is, naturally, specifically designed for big-more engines. In the event that's not an option for your bike, the FMF Mini PowerCore4 will certainly be a better option than the stock exhaust.
Will this work with a 26mm performance carburetor?
By Larry
You would have no problem using this exhaust with a 26mm carb. If you also have a larger than stock Big Bore kit, you could step up into the larger diameter pipe for the XR/CRF50. You can find that pipe by searching "FMF Big Bore Mini PowerCore 4 Exhaust System" in our store search bar at the top of the page.
The exact jetting requirements vary from machine-to-machine. No less, we do have a range of Dynojet Carburetor Jet kits that include everything you need to properly fuel any of the models listed here upon installation of this exhaust on your mini motorcycle.
No, you can't install this exhaust on an otherwise stock machine and expect it to run correctly. Basically, any time you change the way air gets into or out of, the motor, you'll want to adjust fueling appropriately to maximize any performance gains available from the new setup.
The good news is that we have a range of Dynojet carburetor jet kits that include everything you need to get the most out of your new exhaust. Plus, the included instructions explain exactly how to go about installing the jets and configuring it to run correctly with the new FMF exhaust.
Yes, if you were to choose the 2018 Honda CRF50F FMF exhaust from our fit guide, you'd receive the correct exhaust to fit your machine! You can choose this exhaust with, or without, a spark arrestor to fit your exact riding needs. In the instance you plan on taking the '50 to any public trails, you'll certainly want to choose the USFS spark arrestor-equipped FMF exhaust in our fit guide.
A spark arrestor is just that - a device within the muffler that prevents hot sparks from exiting the exhaust and causing a forest fire. If you're going to ride your bike on any public trail, a USFS-approved spark arrestor must be in the exhaust. The arrestor itself is little more than a screen within the exhaust. If stopped by a park ranger or other government agent when riding on public lands, you can expect them to examine the exhaust for that part. Basically, they just put a stick in the muffler to feel for said arrestor.
If your bike is properly jetted, it shouldn't shoot much in the way of flames. As with any exhaust system on a carbureted bike, you will need to adjust fueling in order to prevent the bike from throwing flames out of the pipe. To do that, we recommend an FMF jet kit to go with any FMF Mini PowerCore 4 Full Exhaust System we sell.
Oh yes it is! FMF's mini-moto exhausts are all significantly louder than stock. It'll wake up the bike and if jetted properly, you'll get a pretty good power gain, too!
Verified Purchaser
