Name: Q4 Hex Exhaust Silencer 18-26 Yamaha 450 YZ WR F FX - FMF 044442
Brand: FMF Exhausts
SKU: 06-1784.SIL.Q4
Price: 478.71 GBP
Availability: InStock

Q4 Hex Exhaust Silencer 18-26 Yamaha 450 YZ WR F FX - FMF 044442

FMF Exhausts
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Description

FMF’s Q4 HEX S/A 044442 exhaust sets the standard for truly high-performance, low-noise off-road riding. Leveraging advanced muffler technology with intricate internal chambers and proprietary multi-stage packing, the Q4 delivers strong, usable power gains across the rev range while remaining compliant with stringent USFS and FIM World Enduro sound standards. The included spark arrestor and exceptionally durable construction make this slip-on system ideal for serious trail and enduro riders seeking long-term performance and reliability.

Features

Reduced noise levels for environmentally responsible riding
Meets USFS/FIM sound regulations for off-road competition
Noticeable power gains across all RPMs
Integrated spark arrestor (screen insert included)
Substantially lighter than OEM exhausts
Durable design tailored for extended off-road use
Quiet insert included
Constructed and manufactured in the USA

Specifications

Item ID: 044442
Type: Slip-On
Configuration: Single
Construction: Aluminium
Finish: Natural
Midpipe Material: Stainless Steel
Endcap Material: Stainless Steel
Spark Arrestor: Screen insert (included)
Quiet Insert: Included
Weight: 5.7 lbs
Closed course use only
Carb Warning: None

Vehicle Fitment

Yamaha

WR450F (2019–2024)
YZ450F (2018–2026)
YZ450FX (2019–2025)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ FX 450	2020
YAMAHA	YZ F 450	2018-2019
YAMAHA	YZ F 450	2020
YAMAHA	YZ FX 450	2019
YAMAHA	YZF X 450	2020
YAMAHA	YZF 450	2020
YAMAHA	YZF 450	2018-2019
YAMAHA	WRF 450	2019
YAMAHA	WR F 450	2019
YAMAHA	YZF X 450	2019-2020

Q4 Hex Exhaust Silencer 18-26 Yamaha 450 YZ WR F FX - FMF 044442

FMF Exhausts
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Product form

FMF’s Q4 HEX S/A 044442 exhaust sets the standard for truly high-performance, low-noise off-road riding. Leveraging advanced muffler technology with... Read more

5 in stock 1-2 business days

£478.71 Incl. VAT

Guaranteed secure & safe checkout.

SKU: 06-1784.SIL.Q4

Free shipping on all orders above £75

No hassle returns within 30 days

Description

FMF’s Q4 HEX S/A 044442 exhaust sets the standard for truly high-performance, low-noise off-road riding. Leveraging advanced muffler technology with intricate internal chambers and proprietary multi-stage packing, the Q4 delivers strong, usable power gains across the rev range while remaining compliant with stringent USFS and FIM World Enduro sound standards. The included spark arrestor and exceptionally durable construction make this slip-on system ideal for serious trail and enduro riders seeking long-term performance and reliability.

Features

Reduced noise levels for environmentally responsible riding
Meets USFS/FIM sound regulations for off-road competition
Noticeable power gains across all RPMs
Integrated spark arrestor (screen insert included)
Substantially lighter than OEM exhausts
Durable design tailored for extended off-road use
Quiet insert included
Constructed and manufactured in the USA

Specifications

Item ID: 044442
Type: Slip-On
Configuration: Single
Construction: Aluminium
Finish: Natural
Midpipe Material: Stainless Steel
Endcap Material: Stainless Steel
Spark Arrestor: Screen insert (included)
Quiet Insert: Included
Weight: 5.7 lbs
Closed course use only
Carb Warning: None

Vehicle Fitment

Yamaha

WR450F (2019–2024)
YZ450F (2018–2026)
YZ450FX (2019–2025)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ FX 450	2020
YAMAHA	YZ F 450	2018-2019
YAMAHA	YZ F 450	2020
YAMAHA	YZ FX 450	2019
YAMAHA	YZF X 450	2020
YAMAHA	YZF 450	2020
YAMAHA	YZF 450	2018-2019
YAMAHA	WRF 450	2019
YAMAHA	WR F 450	2019
YAMAHA	YZF X 450	2019-2020

Shipping & Delivery

How long will my item take to arrive?

Orders are typically dispatched within 1 working day and are shipped on a 24hour (non-guaranteed) service.

Where do you ship to?

We currently only ship orders within the UK.

How can I track my order?

Once your order has been dispatched, you will receive a tracking code. Tracking information is emailed to the email address that was provided when placing the order.

Can I collect my order?

Unfortunately we do not offer order collections from our fulfilment centre.