GYTR FMF Powercore 4 Muffler

GYTR FMF Powercore 4 Muffler
GYTR FMF Powercore 4 Muffler

$269.99 - $296.99
10% Off - Save up to $33.00

Description See Also: 10 Reviews 5 Questions Fitment Part Numbers
Item #GYT0033

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10 Reviews
5.0 out of 5 stars
5 Star   10 4 Star   0 3 Star   0 2 Star   0 1 Star   0
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All Reviews
TMD77 Verified Purchaser
Bristol in
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Easy install

Bought this for a woods trip needing a spark arrestor
And it worked awesome. Simple install, didn't need any tuning

Dude
Atascadero, CA
Durability 4/5 Ease of Installation 5/5 Performance 4/5 Power 5/5 Style 4/5
16 450fx

I love the sound and it fit on perfect. Had it installed in under 10 minutes.

GYTR FMF Powercore 4 Muffler
RyanR Verified Purchaser
Parker, CO, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Very pleased with the FMF Header & Silencer

I purchased the FMF GYTR Silencer and Powerbomb header for my '08 WR450F and was very pleased with the resulting quality, ease of installation and performance. The fitment was literally perfect, everything slipped together flawlessly and all the bolt holes lined up exactly. I did re-jet the main and pilot jets with help from a adjustable fuel screw while I had it apart, but the bike runs better than ever and has a nicer sound than it did with the stock silencer & header. The USFS approved spark arrestor adds some peace of mind as well. Very happy with the upgraded exhaust system overall.

GYTR FMF Powercore 4 Muffler
GYTR FMF Powercore 4 Muffler
Flmoto Verified Purchaser
Ocala, FL, USA
Durability 4/5 Ease of Installation 5/5 Performance 4/5 Power 4/5 Style 5/5
Great product

Easy install ,great sound very satisfied with this pipe.

Turfgod Verified Purchaser
Visalia, CA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Perfect

The exhaust now has the low bark I was looking for without a lot of extra noise. The exhaust tip is much larger then stock allowing for better air flow. The bike has better low end power, but is still very linear. No tuner is needed for the bike to run well. I did do the exhaust tune and it did feel a little crisper on the throttle. Well worth it.

IDTrailRunner Verified Purchaser
Ease of Installation 5/5 Performance 3/5 Power 4/5 Style 3/5
Great Sound. Easy to Install.

I replaced the stock muffler on my '15 WR450F with this slip on and I love the sound. The electric start also performed better with the reduced back flow.The instructions were very easy to follow and the muffler went right on where it was supposed to. I have only put on less than 5 hours since installation so I cannot speak to the durability, but so far so good.

Garebear Verified Purchaser
Tooele, UT 84074, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great exhaust

I put it on my 2016 yz250f and it opened my power up more and it also has a great sound when it runs so worth the money!

GYTR FMF Powercore 4 Muffler
Lunn925 Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
2016 yz450f

Instalation was a breeze, looks great, sounds amazing, and made theasy bike feel more responsive.

Youngster Verified Purchaser
Preston idaho
Durability 4/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5

The sound quality is amazing, i enjoy the sound very much. I personally think that i burn cleaner off the bottom end compaired to my buddys bike which is identical just stock muffler. Lots of torque off the bottom end.

BKfromOC Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 4/5
Always FMF!

I have a Powecore 4 on my WR450 and love it, so when I got my new YZ450 it was a sure thing I was getting the same pipe.

5 Questions
Answered:   4
Not Yet:   1
Naberhaus30
Q: Installation - Clamp?
Over 5 months ago
Do I need a clamp? Installing on my 2011 YZ450F and the stock clamp doesn't fit. Do I need one?
RyanR
3 months 29 days ago Location: Parker, CO, USA
A: No clamp needed at least as far as my '08 WR450F was concerned. FMF recommends high-temp silicone to seal the joint though.
Michaelwolf5
Location: SAN DIEGO
Q: How do I get the exhaust to work good?
Over 5 months ago
I bought this exhaust for my 2015 WR450F. But the bikes turns off when Idle, something that never happened before. I need the bike to work good and I dont like it, I followed the instructions so what's next?
Cody
Q: Would I need to purchase the EFI tuner for the 2016 yz 450f to adjust fuel injection if I were to install this pipe?
1 year 2 months ago
MotoSportExpert
MotoSport Staff Expert
1 year 1 month ago
A: Generally with a slip on exhaust you will not need a programmer. I would recommend installing the exhaust and riding the bike to see how it is running then tuning your bike from there if necessary.
Garebear
Over 9 months ago Location: Tooele, UT 84074, USA
A: No because i sliped it on my 2016 yz250f and it ran even better than before.
John
Location: Albany, NY, USA
Q: What is the weight of the GYTR FMF Powercore 4 Muffler ?
1 year 8 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 8 months ago
A: The approximate weight of the GYTR FMF Powercore 4 Muffler for your 2016 Yamaha YZ250F would be 6lbs.
Darryl
Location: Santa Barbara, CA, USA
Q: Is the spark arrestor USFS approved/stamped?
2 years 3 months ago
MotoSportExpert
MotoSport Staff Expert
2 years 3 months ago
A: Yes the GYTR FMF Powercore 4 Muffler is Forestry approved. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
RyanR
3 months 29 days ago Location: Parker, CO, USA
A: It sure is. There is a USFS placard on the top rear of the silencer.
1-5 of 5
Fitment
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# Part Numbers
Product Variant Manufacturer Part #
GYTR FMF Powercore 4 Muffler N/A
GYTR FMF Powercore 4 Muffler N/A
GYTR FMF Powercore 4 Muffler N/A
GYTR FMF Powercore 4 Muffler 1SME47A0T000
GYTR FMF Powercore 4 Muffler 1SLE47A0T000
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