ORO2U Dirt Catalogue - Section E - Engine and Performance.

FMF Exhausts

Exhaust Spares

YAMAHA

Natural Aluminium Silencer, Carbon Fibre End Cap

Silencers

Header

Models (Moto-X)

Years

PC4/Q4

Factory 4.1

YZ 250F YZ 250F YZ 250F YZ 250F YZ 250F YZ 250F YZ 250F YZ 250FX YZ 250FX YZ 450F YZ 450F YZ 450F YZ 450F

2001 - 02 2003 - 05

06-232 06-232 06-232 06-244 06-709

06-1729 06-1669 06-1669 06-1755 06-1977 06-9890 06-1977 06-9890 06-1728 06-1669 06-1669

2006

.FMF.F .FMF.F .FMF.F

06-1669 06-1669

2007 - 09 2010 - 13 2014 - 18 2019 - 26 2015 - 19 2020 - 26 2003 - 05

06-1755 06-1977

.FMF.F 06-1978

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. Factory F4.1 RCT

.F4

06-9890 06-1977 06-9890

06-9877

.FMF.F 06-1978

.F4

06-9877 06-233 06-233 06-246 06-710 06-710 06-1784 06-9923 07-6004 07-6003

2006

.FMF.F .FMF.F

06-1669 06-1669

2007 - 09 2010 - 13 2011 - 13 2014 - 17 2018 - 19 2020 - 22 2023 - 25

06-089

.FMF.F

YZ 450F (F4.1 Hex)

06-1756

YZ 450F YZ 450F YZ 450F YZ 450F YZ 450F YZ 450FX YZ 450FX YZ 450FX YZ 450FX YZ 450FX

06-1970 06-1784 06-1784

Stainless Steel and Aluminium Construction

.SIL .SIL

.SIL.F .SIL.F

.HDR

06-1784 06-1784

.SIL .SIL

.SIL.F .SIL.F

06-1784 06-1784

06-1784 06-1784

2026

2016 - 18

06-1970 06-1784 06-1784

2019 2020

.SIL .SIL

.SIL.F .SIL.F

.HDR .HDR

06-1784 06-1784

06-1784 06-1784 06-9923 07-6004

2021 - 23 2024 - 25

.SIL .SIL

.SIL.F .SIL.F

06-1784 06-1784

06-1784 06-1784

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

Models (Enduro)

Years

Header

PC4/Q4 06-085 06-085 06-085 07-024 06-082 06-082 * * * * * * 06-1682 06-1682 06-1682 06-086 06-084 * 06-1729 06-1669 06-1977 06-9949 06-9890 07-4003 06-1728 06-1669 06-1668

Factory 4.1

TTR 50 TTR 50 TTR50E TTR 90

2006 - 09 2013 - 20 2021 - 25 2000 - 07 2008 - 20 2022 - 25 2000 - 20 2000 - 17 2018 - 25 1987 - 21 2005 - 21 2001 - 02 2003 - 06 2007 - 13 2015 - 19 2020 - 21

TTR 110 TTR 110E TTR 125 TTR 125L TTR 125LE

* * *

TW 200 TTR 230 WR 250F WR 250F WR 250F WR 250F WR 250F WR 250F WR 250F

06-232 06-232 06-232

.FMF.F

06-1669 06-1977 06-9949

FMF is the leader in high performance quiet technology and our Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you don’t need to hear the power, just feel the power! Q4 Hex

.FMF.F 06-1978

.FMF.F

06-9877 06-9877 06-9877

2022

2023 - 24 2008 - 21 2003 - 06 2007 - 11 2012 - 15 2016 - 18

.F4

06-9890

XT 250

WR 450F WR 450F WR 450F WR 450F WR 450F WR 450F WR 450F WR 450F

06-233 06-246 06-246

.FMF.F

06-1669

.FMF.F .SIL.F

06-1970 06-1784

06-1970 06-1784

2019 2020

.SIL

.HDR .HDR

06-1784 06-1784

.FMF.F .SIL.F .SIL.F

06-9946 06-1784 06-1784

06-9946 06-1784 06-1784

2021 - 23

.SIL .SIL

2024

07-6004

*Includes header pipe

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. Megabomb Header

*Please visit our website for current prices

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

E492

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