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FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap

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FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap
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FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap

Our Price: $449.99$607.49

MSRP: $499.99 - $674.99 - You save up to $67.50 (10% off)

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Details

    If you're a rider looking for a silencer that's packing stellar looks and increased performance from a staple brand in motorsports, the FMF Factory 4.1 RCT Anodized Titanium Silencer with Carbon End Cap is an option that we think sits close to the top of the class.

    FMF distinguishes their 4.1 RCT from other silencers from the start by using premium, ultra lightweight materials and a refined design developed with years of industry experience. Features like FMF’s unique Resonance Chamber Technology™ (RCT), a specialized chamber that sits at the front of the slip-on, lowers your exhaust decibel level so it complies with FIM 2M max sound tests and the stringent AMA sound requirements so you can get onto any trail and into any race where noise level regulations are enforced.

    While the RCT lowers sound, what's better is that it won't eat up your bike's power either. In Fact the RCT chamber design refines and enhances exhaust pressure to give your bike gains throughout the rpm range. Power increases are tunable as well with the end cap housing FMF's new Rapid Tuning System (RTS) that lets you swap between race tips (sold seperately) and the 94 db Quiet Core insert. With this level of performance and versatility FMF's Factory 4.1 RCT Silencers really do serve as an excellent option for all types dirt and off-road riders.

    Specs:
  • Titanium canister body for the lightest weight possible
  • Anodized finish gives unique look and corrorsion resistance
  • Genuine carbon fiber composite end cap
  • Rapid Tuning System (RTS) allows for swapable end cap inserts (sold seperately)
  • Compatible with FMF and OEM headers
  • Resonance Chamber Technology (RCT) lowers sound and refines exhaust gas pressure
  • Increases performance throughout the rpm range
  • Efficient design centralizes mass and makes silencer body less prone to damage in a crash
  • Increased packing material volume in main body canister
  • Meets AMA and FIM sound regulations and requirements
  • Quiet Core 94db end cap insert included
  • Spark arrestor included and pre-installed in silencer
  • 100% American made in California
  • Easily removable end cap for quick servicing and repacking
  • Available in various finishes and end cap materials
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.9 / 5.0
56 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
51
4
0
1
0
Value
4.7 / 5
Durability
4.7 / 5
Ease of Installation
4.9 / 5
Fitment
4.8 / 5
Performance
4.9 / 5
Finish
4.8 / 5
Features
4.8 / 5
Recommend it?
Yes (49)
No (1)
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
must have accesory
these is definatly the best you can do with your oem bike. the sound is amazing it is definatly worth every penny.
July 24, 2019
mcallen, TX, US
Purchased
1 year ago
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
Excellent product
Love the sound it gave the bike and the power difference is amazing

-m-2019 KAWASAKI KX450F--
User submitted image
Added Jun 12, 2019
June 12, 2019
Montrose , CO, US
Age: 25-44
Purchased
6 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
4 / 5
Ease of Installation
4 / 5
Fitment
4 / 5
Performance
5 / 5
Finish
1 / 5
Features
3 / 5
Recommend it?
No
Probably one of the toughest to repack!
I really like the exhaust but repacking is impossible on this one. If you plan to repack it, you'd need a shop or another person to help you with. Really toughest exhaust to repack.
May 13, 2019
Edgewater, NJ, US
Purchased
1 year ago
Value
5 / 5
Durability
5 / 5
Ease of Installation
4 / 5
Fitment
3 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Doesn’t come with any springs or a place to attach a spring to the silencer. Couldn’t keep it sealed.
March 27, 2019
Canby, OR, US
Age: 15-24
Purchased
8 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
FMF 4.1 Anodized
Love the fit and finish of my new FMF slip on. My bike is more quiet and though it's a little lighter than the stock, the difference is not as much as I thought. Only ridden a few times and already got a lot of complements.

-m-2016 KTM 500 EXC--
March 4, 2019
Gilroy, CA, US
Age: 45-64
Purchased
9 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'4 - 5'6
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Recommend it?
Yes
Awesome
This product bolted right up ... no complaints!!

-m-2019 KAWASAKI KX450F--
User submitted image
Added Nov 21, 2018
November 21, 2018
Danbury , CT, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
221 - 250 lbs.
Height:
6'1 - 6'3
Value
4 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
5 / 5
Features
5 / 5
Recommend it?
Yes
Great fit and sound - Husqvarna FE350
It's almost as though this exhaust was made for the Husqvarna bikes. The blue titanium looks fantastic on my FE350. The carbon end cap is just icing on the cake. The installation was extremely simple, and the fit and finish is perfect. I had my bike desmogged and reflashed prior to the install, and the difference the exhaust made was amazing. The stock exhaust has a charcoal section that really restricts the bike. Other than being on the expensive side, this is one of the best mods I've done to the bike. I highly recommend.

-m-2017 HUSQVARNA FE 350--
Husqvarna FE350
Husqvarna FE350
November 15, 2018
ROUND ROCK, TX, US
Age: 45-64
Purchased
1 year ago
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
Super easy to order. Got here super fast. FMF rules and so does rockymountainatvmc.com
August 31, 2018
Buffalo, NY, US
Purchased
1 year ago
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
Great purchase
One if the best bike mod you can get, such a nice product and really cleans up the power curve

-m-2018 KAWASAKI KX250F--
Clean
Prepped
Beautiful
Ohhh titanium
August 23, 2018
Welland, ON, CA
Age: 15-24
Purchased
1 year ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'10 - 6'0
Value
3 / 5
Durability
1 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Finish
1 / 5
Features
4 / 5
Recommend it?
Yes
Great sound and looks awesome but very fragile finish.
I went back and forth for months trying to decide what slip on I wanted to run on my 18 rmz450. When I was younger we always ran FMF on our 2 stokes, so I decided to go with the titanium 4.1 rct. I have to say the install was a breeze, the sound of the bike now is dramatically different in a positive way, sounds like a 450 should , and I love the carbon end cap and blue anodizing. I understand this pipe is on a dirtbike and I’ll most likely biff and dent it before long, But the anodizing is very easy to rub off/ scratch. After the first ride the inside of my side plate had built up some dirt and must of rubbed on the pipe, after a full day of riding I washed my bike and seen that 2 areas on the inside of the pipe had worn through to the bare titanium, about the size of 2 quarters. So that was the first issue with the anodizing. The second issue which surprised me more was a loose end of my tie down straps coming up through my rear wheel was flapping around and was hitting my pipe. After about a hour drive, I arrived at the track and seen which looked like scruff marks/ light scratches all over the inside of my pipe and removed even more anodizing. Not sure if I received a pipe that got a thin coat of blue or what. Other than the very fragile finish, I really dig the pipe. Shipping was fast and no issues with my order from Rocky Mountain.

-m-2018 SUZUKI RMZ450--
User submitted image
Added Aug 15, 2018
August 15, 2018
Sarasota , FL, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
6'1 - 6'3
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 18 questions Browse 18 questions and 64 answers
is the spark arrestor usfs approved?
Alan B on Jun 18, 2017
BEST ANSWER: Yes it is.
Is this just bolt on and go for fuel injected bikes, or is there any tuning required...or just optional tuning?
brad j on Mar 7, 2017
BEST ANSWER: All you have to do is take ur old exhaust off of your bike and just slide this one on. Your bike probably will have this ring that tightens the exhaust to the pipe on your bike. You will have to take the ring off the pipe because this exhaust isnt thick as the standard one. I put this baby on my 2016 yz250f and love it so much. Yes it works for fuel injected bikes
Does this come with a spark arrestor for trails?
Austin H on Feb 22, 2017
BEST ANSWER: Yes. My FMF Factory-4.1 Titanium Silencer with Carbon End cap from Rocky ,mountain ATV/MC came with a spark arrest screen coned insert. it does not come installed but installation is easy. I put my FMF pipe on my 2015 YZ 250FX and I felt a difference in power throughout. I ride and race woods with a little moto when I can.
Does anodized finish scratch or fade at all? How durable pipe finish is?
Andrey M on Apr 30, 2017
BEST ANSWER: I absolutely love the pipe but the finish isn't holding up as well as I hoped. Mine isn't faded but the decals are getting rough looking and it scratches pretty easily. The way I see it though it's going on a dirtbike not a show bike. No exhaust is not going to stay new looking.
Do you have to use the spark arrestor? Whats are the cons and pros?
ivan c on Apr 20, 2017
BEST ANSWER: if your on a closed course MX track you are not made to use the spark arrestor, Most county owned tracks will require them, all off road in California require them also, The fact of losing power with it, Im not sure if you will be able to notice the difference.
is this a slip on or in other words can i put this on my 2016 fc 250 with the stock header?
Luke V on Dec 30, 2017
BEST ANSWER: yes when you order a pipe for 2016 fc 250 it will fit the header pipe. i also use ultra copper high temp silicone for better seal, you will need to let it dry for a day
What's the difference between the $449.99 exhaust and the $650 exhaust for a 2019 Husky 450 FX?
Bronson S on Nov 23, 2018
FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap
FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap
KTM FMF Factory 4.1 RCT Titanium Silencer with Carbon End Cap
KTM FMF Factory 4.1 RCT Titanium Silencer with Carbon End Cap
BEST ANSWER: That’s a good question I would call FMF and ask them
Will this fit my 2016 ktm 250 sxf?
Ronald s on Aug 14, 2019
BEST ANSWER: Yes, I do show this fits your machine. Just enter in the Year, Make and Model and it will have the correct part for your machine.
I notice bike years only go back 07 do you have ti carbon muffler for an WR450f 05?
Russell S on Jul 2, 2019
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 2020 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.
I assume this will fit a 2017 KTM 250 excf?
Ben B on Apr 21, 2019
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 2019 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.
It says it is available in various finishes and end cap material. If I order what will I get?
juan luis c on Mar 8, 2019
BEST ANSWER: What is the year, make and model of your machine? I need that information to pull up the correct pipe.
is this FMF better than the akrapovic silencer for a 350 exc-f 2018? pros, cons
Diego G on Oct 15, 2018
BEST ANSWER: It’s American made and any questions you have they can always answer
What is the weight savings over stock on a 2017 Husqvarna FE 350?
Gregory E on Mar 18, 2018
BEST ANSWER: We do not have stock weight but this FMF silencer weighs 4.3 lbs.
hi i wander if i can use these in the street?
Roberto M on Nov 13, 2016
BEST ANSWER: You'll want to check with your local laws and regulations to see what they're restriction for motorcycle exhausts are.
Hi I wander if these fit the stoc header wr450f 2016 ?
Roberto M on Nov 9, 2016
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.
Will this fit a 2010 yz250f stock header?
noah s on Sep 19, 2016
BEST ANSWER: Yes this will fit up with the stock header.
Will the FMF 4.1 RTC fit on a 2014 yz250f stock header??
A shopper on Aug 23, 2016
BEST ANSWER: I checked into this for you and this machine is listed for your machine.
Will this fit a 2016 KTM 350xcf ?
A shopper on Aug 23, 2016
BEST ANSWER: Yes, this will fit the 2016 KTM 350 XC-F. The part number is 1479360016.
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