Choose a vehicle:

User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.

» Log in to use your Rider Profile Machines
FMF Factory-4.1 RCT Aluminum Silencer with Carbon End Cap
  • View Larger
  • Videos

Customer rating on this product:

Read reviews (8) | Write a review

FMF Factory-4.1 RCT Aluminum Silencer with Carbon End Cap

Our price: $343.99$404.99

MSRP: $399.99 - $449.99 - You save up to $56.00 (14% off)

View Product Details

Select type, make, model and year above

  • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

    -Dan Thomas, CEO and Founder

  • Returns

    We take pride in offering no hassle returns. In the event of a return, please call, email or chat with us to receive a solution to the problem. For apparel that doesn't fit quite right, Click here to see our Fit Guaranteed Program.

  • Warranties

    We will stand behind all products we sell with regards to manufacturing defects in workmanship and material. Most products are limited to the manufacturer's warranty. However, we will do everything in our power to take care of the problem.

  • Have questions?

    (Leave email if after hours)
    Call us: 1 800 336-5437
    7am-7pm Mon-Fri 8am-4pm Sat (Mountain Standard Time)
    The FMF Factory-4.1 RCT Aluminum Silencer features a bigger volume can which can utilize more packing material for better performance and longer lasting low output sound volume. The RCT in the front end of the exhaust is another huge added gain for sound and performance. The FMF Factory-4.1 RCT Aluminum Silencer is sound compliant with the FIM 2M Max sound test. The design of the FMF RCT exhaust was to offer a look that really fits the complex lines that many of the manufactures are leaning towards.
  • 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 Fiber rear end cap for simple installation of tuning tip inserts or spark arrestor.
  • Meets AMA and FIM sound requirements.
  • Spark arrestor included in muffler.
  • Built 100% in the U.S.A. at FMF’s state-of-the-art-factory.
  • Maintenance made easy with the removal of 4 screws on the front end cap.
  • Compatible with stock head pipe or FMF head pipe.

FMF Factory-4.1 RCT Aluminum Silencer with Carbon End Cap Reviews

Your review could win you a $100 or $500 gift card!

Each review submitted enters you into a $100 gift card monthly drawing, and a $500 gift card quarterly drawing!

0 of 0 people found this review helpful.

needs the power bomb

Comments On Aug 23, 2015:used with a stock header I think this actually robs power on the low & mid side. High end it helps a little -not so beneficial for the woods.
Now add the power bomb header and it slightly increases the low & mid from stock but not enough to make it worth the cost.
Using with stock header it's super loud Using with he power bomb does quite it down a bit but is still loud. Luckily it comes with a noise/arrester insert.
For the money a big bore kit would be a better option for power. If you want something that looks cool and sounds cool you'll like it just don't forget the power bomb or it's a total waste of money

Was this review helpful?

0 of 0 people found this review helpful.

definite improvement over OEM

Comments On Aug 07, 2015:Sounds awesome which is a good thing in the thick woods & a non directional track. Greatly increased low & mid range power and throttle response over the OEM SX silencer.

Was this review helpful?

0 of 0 people found this review helpful.

Good, not great

Comments On Jun 10, 2015:Overall I'm pretty happy with this slip-on. It most definitely improves the sound by giving it a much louder and throatier sound compared to stock. I'm using it with the stock header, but I did remap the ECU after installation. I've got to say, I didn't feel THAT big a difference in power over stock. The bike definitely runs richer after the remap and it might pull a little longer overall after installing this slip-on, but it's not a night and day type thing. The only real negatives were the lack of any type of sealing gasket where the muffler slips on to the header pipe (had to use high temp gasket maker) and the fact that the can itself is not completely sealed where it is riveted together (i noticed some water being displaced from there upon start up after the first wash).

Was this review helpful?

0 of 0 people found this review helpful.

flying machine factory

Comments On Apr 06, 2015:Best pipe out there. It made a noticeable difference. love the look too

Was this review helpful?

0 of 0 people found this review helpful.


Comments On Jan 30, 2015:FMF has done it again !! Very nice !! The fit and finish was perfect. Clean look. Improved low end power. Thank you RM for great return policy and fast too..

Was this review helpful?

0 of 0 people found this review helpful.

Awesome Exhaust!

Comments On Jan 15, 2015:So much better sound, and definitely seems to be a bit more power. Using it with the FMF Power Bomb Header Pipe.

Was this review helpful?

1 of 1 people found this review helpful.


Comments On Jul 12, 2014:Oh Yeah! The install changed the stock tune so be prepared to buy a tuner. I have to run spark arrestor for many races and this one comes with it. The sound is not obnoxious and pretty close to stock. I'm very happy with this purchase.

Was this review helpful?

2 of 2 people found this review helpful.


Comments On May 06, 2014:Bought this for my ktm 350xcf 2014, gave it a nice extra power and extra sound to the bike.

Was this review helpful?

If you cannot see the videos you may need to upgrade Adobe Flash Player. Get Adobe Flash Player

Product Info

FMF Factory 4.1 RCT Sound Bite

Frequent Buyer ProgramParts Finder