FMF Q4 Slip-On Exhaust Yamaha YZ450F 2003-2005 / WR450F 2003-2006

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FMF 4-Stroke Muffler Re-Pack Instructional Video

Stainless Steel/Aluminum/Stainless Steel

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Material: Stainless Steel/Aluminum/Stainless Steel

Blemished/Refurbished

This item is available as a Blem/Refurb. These are items that cannot be sold as "New" merchandise and are limited to stock on hand. See the product details for a description of the product's condition.

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FMF Q4 Slip-On Exhaust Yamaha YZ450F 2003-2005 / WR450F 2003-2006 Instructions

Installation Instructions (pdf)

FMF Q4 Slip-On Exhaust Yamaha YZ450F / WR450F

The FMF Q4 Slip-On Exhaust was engineered for power and performance, proving you don’t need to settle for a restricted moto muffler to keep noise levels down.

Features:

Developed over years of championship off-road racing
Max Sound output 96 dB; most models below 93 dB
Constructed from aircraft grade aluminum
Removable spark arrestor included
Can be used with stock or FMF Header
Weight: 5.9 lbs
100% Made in the USA

Uh oh - Our system doesn't think this part will fit your 2005 KYMCO Filly 50 (change vehicle selection)

Yamaha: WR450F 2003, 2004, 2005, 2006; YZ450F 2003, 2004, 2005

This item is also available for 14 other models:

Honda: CRF150R 2007-2026; CRF150R Expert 2012-2026; XR650L 1993-2025

Kawasaki: KLX400SR 2003-2004

Suzuki: DR650SE 1997-2020; DR-Z400 2006-2007; DR-Z400S 2000-2024; DR-Z400SM 2005-2024

Yamaha: WR250F 2003-2006; WR250F 2007-2013; WR450F 2007-2011; YZ250F 2003-2005; YZ250F 2006-2009; YZ450F 2006-2009

Product Style	Item #	Store SKU	Manufacturer Product #	Availability
Product Style Stainless Steel/Aluminum/Stainless Steel	Item # 894455	Store SKU	Manufacturer Product # 44199/044199	Availability In Stock: Ships within 24 hours