ORO2U Dirt Catalogue - Section E - Engine and Performance.

4-Stroke

FMF Exhausts

BETA Models (Enduro)

Silencers

Titanium Body Anodized, Carbon Fibre End Cap

Factory 4.1 Header

Years

PC4/Q4 06-1966 06-9934 06-1966 06-9934 06-1966 06-1966

350 RR 350 RR 390 RR 390 RR 400 RR 400 RR

2010 - 18 2020 - 25 2017 - 18 2020 - 25 2010 - 13

06-1972 06-9933

.FMF.F

06-9934

.FMF.F

06-9934

06-9933 06-1967

2014

430/480 RR 430/480 RR

2015 - 16 2017 - 18 2020 - 25

06-1967 06-1967 06-9942 07-6002 06-1967 07-6002 06-9942 06-1967 06-1967

06-1966 06-9934

Factory F4.1 RCT

430 RR 450 RC 450 RR 450 RX 480 RR 498 RR 520 RR 520 RR

.FMF.F

06-9934 07-4002

2025

.T41

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our 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 our exacting specifications and is manufactured 100% at our Southern California factory.

2010 - 14 2024 - 25 2020 - 25 2010 - 14 2010 - 13

06-1966

.T41

07-4002 06-9934

.FMF.F

06-9934 06-1966 06-1966 06-1966

2014

GASGAS

Stainless Steel and Aluminium Construction

Silencers

Factory 4.1 Header

Models (Enduro)

Years

PC4/Q4 06-1747

EC 250F EC 250F EC 250F EX 250F EC 350F EX 350F EX 450F

2010 - 11

06-1746 06-1960

2012 2021

.FMF.F

06-9924 06-9907 06-9924 06-9907 06-9907

06-9924 06-9908 06-9924 06-9907 06-9907

2021 - 23

.F4

06-9904 06-9921 06-9905 06-9906

2021

.FMF.F

2021 - 23 2021 - 23

.F4 .F4

When designing the PowerCore 4 HEX, we looked at our top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durability all at a price that won’t break the bank. Powercore 4 Hex

HONDA Models (Enduro)

Silencers

Factory 4.1 Header

Years

PC4/Q4 06-1684 06-1684 06-060 06-061 06-060 06-062 06-063 06-063 06-063 06-062 06-1944 06-9913 * * * * * * * * 06-1939 06-9914 06-1717 06-1717 06-1717 06-9915

2004 - 25 2000 - 03

* *

CRF 50F

XR 50

CRF 70F CRF 70F

2004

2005 - 12 2001 - 03 2004 - 13 1986 - 90 1993 - 00 1986 - 00 2001 - 03 2013 - 18 2019 - 26 2014 - 18 2019 - 25 2003 - 17 2003 - 17

XR 70

CRF 80/100F

Megabomb Header

XR 80 XR 80 XR 100

The science behind the Megabomb header may be our greatest engineering accomplishment to date. You can pay an engine builder thousands or bolt on a Megabomb for as much as a 3hp boost! Plus, the megabomb actually reduces noise levels by as much as 1.5dB. The megabomb header will have you pulling holeshots and dusting all the boys on the way up Competition Hill. Simply bolt it on and go faster.

XR 80/100 CRF 110F CRF 110F CRF 125F CRF 125F CRF 150F CRF 230F CRF 230F CRF 250F

*

.FACT

06-9913

07-6016

*

.FACT

06-9914

06-9935

06-1940 06-1940

2019

2019 - 25

CRF 250L Rally

2017 - 20 06-1697.RAL

CRF 250X

2004 - 17 1996 - 04 2005 - 09 2012 - 17 2019 - 25 1988 - 98

06-1696 06-151 06-1724 06-1724 06-9911

06-230

Powerbomb Header

XR 400

CRF 450X CRF 450X CRF 450X XR 600 XR 600 XR 650L XR 650L XR 650R XR 650R

.FMF.F4 .FMF.F4

06-1724 06-1724 06-9911

06-231 06-231 06-9912 06-182 06-182 06-182 06-182 06-191

The redesigned PowerBomb is a four-stroke header that incorporates FMF’s patented PowerBomb module at a

precise location in the initial stage of the header. By positioning this “Bomb” at a key point in the system, increased performance and flow is achieved through the expansion and contraction of exhaust sonics through the system. Result is a flow increase of nearly 10%! The outer chamber in the Powerbomb allows the air to expand, cool and ramp back up at a higher velocity. Additionally, the PowerBomb is a “pre-muffler” of sorts which helps to lower the bikes sound output by providing more sound absorbing surface area for the sound medium (exhaust gases).

.FMF.F

2000

1993 - 09 2012 - 20 2000 - 05 2006 - 07

06-067 06-067 06-164 06-164

*Includes header pipe

CRF250/450 Single Silencer Conversion Side Panel Left hand side panel to be used when converting your Honda CRF dual silencer back to a single silencer. For use on CRF250R 2014- 17 & CRF450 2013-16 models. Part No. .S/PANEL 06-1975

*Please visit our website for current prices

E-mail: sales@oro2u.com

www.oro2u.com

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