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FMF Power Core IV Modular Quiet Core Insert

FMF Power Core IV Modular Quiet Core Insert
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FMF Power Core IV Modular Quiet Core Insert

Part# 1148620001 | Mfg Part# 040171

Our Price: $25.99

MSRP: $27.99 - You save $2.00 (7% off)

Get $1.30 in Quick Cash

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5+ In-Stock

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Special Notes:

  • This insert is for the early 3-bolt style end cap Power Core Exhausts.
  • Quiet Core Insert Lowers Sound by 4db
  • 3-bolt style for older Power Core silencers.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FMF Power Core IV Modular Quiet Core Insert Reviews

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4.7 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
7
3
0
0
0
Value
5.0 / 5
Durability
5.0 / 5
Ease of Installation
5.0 / 5
Fitment
4.5 / 5
Finish
4.5 / 5
Recommend it?
Yes (2)
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Finish
5 / 5
Recommend it?
Yes
What a difference!
Installed in 5 minutes. Makes the powercore 4 less obnoxious. I felt like I was annoying other riders. I was about to put the stock muffler on until I ran across this insert. Makes a huge difference at idle and low rpm. It takes a lot of the bark out of the sound. Without the insert, my decibel app on my phone was pegged at 90db. Once installed, the app was showing an average of 79db at idle. Whether those db readings are true, who knows. But the difference in levels is remarkable. The pipe is still loud at high rpm, but does seem just a bit quieter. It also crackles a bit when I give her the beans...still, I love this insert and will never ride without it.

-m-2003 SUZUKI DR-Z 400E--
May 19, 2020
OK, OK, US
Age: 45-64
Purchased
2 weeks ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
4 / 5
Finish
4 / 5
Recommend it?
Yes
QUIET
this really quieted down my bike. some modification was necessary in y case due to the age of the silencer, but still worked very well.
September 8, 2016
Napa, CA, US
Purchased
over 3 years ago
Good item
Good item
March 5, 2013
LAKELAND , FL, US
quieter
made a lot of difference at idle and low rpm,quieter.maybe i can sneak out of the yard now without the neighbors scowling.
March 8, 2012
alamogordo, NM, US
Age: 65+
Gender:
Male
Weight:
221 - 250 lbs.
Height:
5'10 - 6'0
Good Sound
Changes the sound a little but still has a nice tone when hammering the throttle. Made it possible to use the exhaust on my dualsport without the cops bothering me and neighbors complaining. Fit good with no problems.
April 12, 2011
NY
Lets dad sleep.
I had to get an exahust silencer for fmf power core 4 because it was to lound and my dad wasnt able to sleep the hours he needed to because it was to loud but this helped alot.
May 20, 2010
PA
Did its job
takes away alot of power but my neighbors and the local police dont like the loundness.after a 69$ ticket for a noise ordinance had to get one. the highest you could be is 80 decibels i was idleing at 95! ops
May 5, 2008
SD
Great Material, Changes tone of sound.
I was really hoping this would quiet down the bark the PowerCore 4 has. But really it only effects the low rpm bog sound, Any thing past mid throttle has almost a crackle to it.

Not the sound I was looking for, Quality is Defiantly FMF though. Stainless steel.
April 22, 2008
OH
worked great
really took the kick out of the sound in my 300ex, the neighbors were getting anoyed before installing this. retained horsepower!
April 9, 2008
WA
nice quality
rocky mountain quality is all i can say.

(which is good)
October 26, 2007
CA
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Browse 1 question Browse 1 question and 1 answer
I have a powercore 4 muffler and purchased this it comes with no instructions and I cannot figure out how to install it, can anyone help me? I have searched for the instructions on fmf website and the link is broken for the download, so I have no idea how to proceed.
GUY M on Feb 11, 2017
BEST ANSWER: You will just need to take the end cap off of your silencer and then slip this in and install the end cap back onto the muffler.
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