In stock

FMF Factory 4.1 RCT Slip-On Muffler — Anodized Titanium with Carbon Fiber End Cap — EC 250/350F

FMF · #1821-2001 · Slip-Ons / Exhaust

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
Compatible with stock header or FMF header

$649.99

In stock. Ships in 2–4 business days · free shipping over $150.

Questions? Call the shop: 801-361-3010

Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014

Shop all FMF
Everything we carry from FMF →

Description & features9 features

This is a one piece slip-on muffler and will mount to the standard or FMF header pipe. There is no separate mid-pipe.

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
Compatible with stock header or FMF header
Meets AMA and FIM sound requirements
QuietCore 94 dB insert included
Spark arrestor included in muffler
Made in the USA

Specifications11 specs

Muffler Material: Titanium
Type: Slip-On
Units: Each
End Cap Material: Carbon Fiber
Muffler Color/Finish: Anodized, Blue
Riding Style: Off-Road
Model: Factory 4.1 RCT
End Cap Color/Finish: Black
Shipping weight: 6.25 lb
Package size: 23.7 × 7.3 × 5.5 in
Country of origin: USA

Fitment9 models · Gas Gas, Husqvarna, KTM

Gas Gas2 models

EC 250F2021
EC 350F2021

Husqvarna4 models

FE 2502020–2022
FE 4502020–2023
FE3502020–2022
FE5012020–2022

KTM3 models

350 XCF-W2020–2022
450 XCF-W2023
500 XCF-W2020–2022

Fitment comes from the catalog data for this part. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.

Part numbers

Salto part #: 1821-2001
FMF part #: 045648

Shipping

In stock. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is checked again before your card is charged.

Questions4 answers

Is it in stock?: Yes — it’s in stock right now. We check again the moment you order, before anything is charged.
How fast will it get to me?: Usually 2–4 business days by ground.
Will it fit my machine?: It’s listed for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.
Is this genuine FMF?: Yes. It’s new and genuine, straight from Salto — FMF part #045648.