FMF Factory-4.1 RCT Aluminum System With Carbon End Cap

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FMF Factory-4.1 RCT Aluminum System With Carbon End Cap
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FMF Factory-4.1 RCT Aluminum System With Carbon End Cap

Our Price: $601.99$787.99

MSRP: $699.99 - $874.99 - You save up to $98.00 (14% off)

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Additional Videos

FMF Factory | Inside Look

FMF Factory 4.1 RCT Sound Bite

RM YouTube Channel

Details

    The FMF Factory 4.1RCT (Resonance Chamber Technology) Aluminum muffler is all new from FMF Racing and incorporates the latest in resonance chamber technology. A Patented core shape lowers sound levels while maintaining maximum power output, and the five –sided canister shape increases internal volume allowing for the use of more sound absorbing material. The new chamber design of the muffler also allowed FMF to enhance and refine exhaust pressure through a series of internal chambers while meeting FIM 2M-Max sound test as well as the AMA 94dB standards.
  • All new incorporating the latest in Resonance Chamber Technology.
  • Patented core shape lowers sound level while maintaining maximum power output.
  • Patented canister shape increases internal volume for more sound absorbing material.
  • Patented chamber design to enhance and refine exhaust pressure.
  • Factory Forward Engineering centralizes mass and is less prone to crash damage.
  • Tuned exhaust with optimized core specifications for each application.
  • Innovative carbon rear end cap for simple installation of tuning tip inserts or spark arrestor.
  • Stainless Steel Megabomb header included to optimize each machines power output.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

FMF Factory-4.1 RCT Aluminum System With Carbon End Cap Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.5 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
1
1
0
0
0
Value
5.0 / 5
Durability
4.5 / 5
Ease of Installation
4.0 / 5
Fitment
4.0 / 5
Performance
4.0 / 5
Finish
4.5 / 5
Features
4.0 / 5
Recommend it?
Yes (2)
Value
5 / 5
Durability
5 / 5
Ease of Installation
3 / 5
Fitment
4 / 5
Performance
5 / 5
Finish
5 / 5
Features
4 / 5
Recommend it?
Yes
Love the look on my YZ450fx and power increase after mapping
Awesome fit and finish , the weight of the system is a little less then stock but if you’re buying it on a budget this is the way to go , great sound and if you buy the Q spark arestor it really helps for off-road areas or your neighborhood when doing hot laps keeps the cops away

-m-2017 YAMAHA YZ450FX--
May 22, 2018
Simi valley, CA, US
Age: 25-44
Purchased
9 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
4 / 5
Performance
3 / 5
Finish
4 / 5
Recommend it?
Yes
Adds a nice look
This full exhaust system really adds a nice look to my bike . This was the first upgrade to my bike when I bought it from the showroom floor .
Power gains: I would say are physiological...however I only put two short rides on my bike during the break in period with it stock than put this on. Maybe I got a little more out of first and second but not much.
Sound: is a little deeper than stock. It does not sound obnoxious. If your going through the track a lot of other bikes will be louder .

Looks: pretty good the welds look very nice. One thing I was not liking when I first put the exhaust on was the color of the header it was really chrome . But don’t worry like I first did, that will change once you put some hours on the bike and get that nice purple and blue exhaust color. The silencer is really nice with the carbon cap. The fmf 4.1 sticker didn’t last long on mine for some reason.

Fitment/installation: very very very easy to do . Won’t take you longer than 30 minutes just remember to leave every connection point loose while putting it together . Line the silencer and bolt everything down . The header has yet to get in my way when turning I have not burned my pants from the megabombs size . DO NOT FORGET to add hi temp silicone to all of your connection points. Fitment was pretty good for the header , when it came to the silencer it is a really close fit from the carbon end cap to the rear plastic on my bike .

Overall I would have liked a little more exhaust note from this full exhaust system. Looks really good on the bike after break in.

2017 SUZUKI RMZ250
Adds a nice look
Installation
Clearance from carbon cap to rear plastic
February 24, 2018
Phoenix , AZ, US
Age: 15-24
Purchased
11 months ago
Gender:
Male
Each question or answer submitted enters you into a:
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$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 9 answers
It's full system right?
A shopper on May 24, 2017
BEST ANSWER: Yes, this is a full system.
Will i need to tune my 15 yz450f it i use this exhaust?
Stephen K on May 19, 2018
BEST ANSWER: The answer to this question is yes and no , to get max power out of this exhaust system yes you will need to buy a tuner , but from what iv read and tried the bike will still run fine without mapping it from the computer, best idea is go on “ thumper talk “ forums and I have found many riders that have different maps and experiences with yxz fuel injected for different styles rider or using it for moto track or off-road , also call FMF they should have good map settings
Can you get a spark arrestor for this system?
A shopper on Oct 17, 2017
BEST ANSWER: This system comes with a removable spark arrestor. Very easy to install or remove.
is this system louder than the yoshimura rs4?
A shopper on Jun 15, 2018
BEST ANSWER: No I think they are about the same with no spark arrester
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