Skip to content
FMF 4.1 RCT Exhaust with MegaBomb - Aluminum RM-Z 450 2018-2021 043366 1820-1818

FMF 4.1 RCT Exhaust with MegaBomb - Aluminum RM-Z 450 2018-2021 043366 1820-1818

SKU 043366
by FMF
Sold out
$949.99
$949.99 - $949.99
$949.99
$855.00
$855.00 - $855.00
$855.00


  • The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally
  • Shorter overall length that is less susceptible to crash damage and complementary to FMF's Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
  • The Factory 4.1 RCT is constructed from only aerospace grade materials that meet FMF's exacting specifications and is manufactured 100% at their Southern California factory
  • Massive Power gains throughout the RPM range.
  • Huge weight savings
  • New RTS (Rapid Tuning System)
  • Includes MegaBomb header
  • Includes spark arrestor screen insert

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Let customers speak for us

from 5577 reviews

A+very Satisfied and quick shipping the best

panch73
Magma Powersports

Great buy great seller

vla-koles
Magma Powersports

Fast shipping

zratliff
Magma Powersports

Great, thanks!!

bigworm631
Magma Powersports

Excellent seller communication! Items received before the posted arrival date. Items as described! I have not installed the items yet, but will update if any issues! Thank you!

legendmc
Magma Powersports

arrived on time highly recommend them

6543terry
Magma Powersports

👍👍Great product!

scblockmonsta864
Magma Powersports

Great seller, fast shipping thanks.

biker_house_peru
Magma Powersports

excellent product fast shipping. Will do business with again. highly recommend. A+++++++++++++

aguirre561
Magma Powersports

Awesome Product, as advertised, Would buy again, A+++++

d17217
Magma Powersports

Good work

clocarlrodr
Magma Powersports

Reliable seller they send the goods before estimated time which is awesome Thank you Sport Bike superstore

toroloco0007
Magma Powersports

Perfect fit n looks great

rust760
Magma Powersports

The build quality is top notch! Don't fret if it doesn't match the OEM setup, even if the instructions say otherwise! The OEM is a 2O type (over the fender), but these CoreMoto lines are 2F type (double banjo, single dedicated line from master to each caliper). The description does not list this, but the CoreMoto website explains kits will default to this 2F type for better performance.

masu-yoshi
Magma Powersports

Thanks y’all for the fast shipping definitely will be ordering from y’all again

diondreyamahar1
Magma Powersports