Q4 Hex Exhaust Silencer 18-26 Yamaha 450 YZ WR F FX - FMF 044442
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FMF's Q4 HEX S/A 044442 exhaust offers high-performance, low-noise off-road riding with advanced muffler technology, intricate internal chambers, and proprietary multi-stage packing. It provides power gains across the rev range while meeting USFS and FIM World Enduro sound standards. Features include an integrated spark arrestor, durable construction for extended off-road use, and a quiet insert. This slip-on system is substantially lighter than OEM exhausts. Constructed and manufactured in the USA with aluminium construction, stainless steel midpipe, and endcap. Weight 5.7 lbs. Closed course use only.
- SKU
- 06-1784.SIL.Q4
- Brand
- FMF Exhausts
- Availability
- In Stock (5)
Fitments (28)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WR 450F | 2019 |
| YAMAHA | WR 450F | 2020 |
| YAMAHA | WR 450F | 2021 |
| YAMAHA | WR 450F | 2022 |
| YAMAHA | WR 450F | 2023 |
| YAMAHA | WR 450F | 2024 |
| YAMAHA | WRF 450 | 2019 |
| YAMAHA | YZ 450F | 2018 |
| YAMAHA | YZ 450F | 2019 |
| YAMAHA | YZ 450F | 2020 |
| YAMAHA | YZ 450F | 2021 |
| YAMAHA | YZ 450F | 2022 |
| YAMAHA | YZ 450F | 2023 |
| YAMAHA | YZ 450F | 2024 |
| YAMAHA | YZ 450F | 2025 |
| YAMAHA | YZ 450F | 2026 |
| YAMAHA | YZ 450FX | 2019 |
| YAMAHA | YZ 450FX | 2020 |
| YAMAHA | YZ 450FX | 2021 |
| YAMAHA | YZ 450FX | 2022 |
| YAMAHA | YZ 450FX | 2023 |
| YAMAHA | YZ 450FX | 2024 |
| YAMAHA | YZ 450FX | 2025 |
| YAMAHA | YZF 450 | 2018 |
| YAMAHA | YZF 450 | 2019 |
| YAMAHA | YZF 450 | 2020 |
| YAMAHA | YZF X 450 | 2019 |
| YAMAHA | YZF X 450 | 2020 |
- General Product Group
- Exhaust Systems & Parts
- General Product Type
- Silencer
- Variant Id
- 209413
FULL DESCRIPTION
FMF Q4 Hex Exhaust Silencer
Elevate your off-road riding experience with the FMF Q4 Hex Exhaust Silencer. This high-performance silencer is engineered to deliver exceptional power gains across the entire RPM range while adhering to strict sound regulations. Its advanced muffler technology and specialized packing ensure a potent yet quiet performance, making it ideal for trail and enduro riders who demand reliability and efficiency.
Key Features:
- Significantly reduced noise levels for compliant off-road use.
- Meets USFS and FIM World Enduro sound standards.
- Provides noticeable power improvements throughout the rev band.
- Includes an integrated spark arrestor screen insert.
- Substantially lighter than stock exhausts, contributing to better handling.
- Durable construction designed for demanding off-road conditions.
- Comes with a quiet insert for further sound reduction.
- Manufactured in the USA.
Specifications:
- Type: Slip-On
- Configuration: Single
- Construction Material: Aluminum
- Midpipe Material: Stainless Steel
- Endcap Material: Stainless Steel
- Finish: Natural
- Spark Arrestor: Included (Screen Insert)
- Quiet Insert: Included
- Weight: 5.7 lbs
- Application: Closed course use only
QUESTIONS? JUST ASK
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
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