Factory 4.1™ Exhaust System Yamaha YFZ 450 R 2009-2017, 2019-2027 / Yamaha YFZ 450 R 2018 (AMERICA) / Yamaha YFZ 450 RSE Special Edition 2009-2020 / Yamaha YFZ 450 X 2010-2011 (AMERICA) / Yamaha YFZ 450 XBB Bill Ballance Edition 2010 (AMERICA) / Yamaha YFZ 450 XSE Special Edition 2011 (AMERICA)
FMFPart no. 044438
Our price £1,151.88
RRP £1,212.50Save £60.62 (5%)
Price includes applicable VAT. Delivery calculated separately.
Choose the exact model and year to view its supplier application.
Product details
Factory 4.1™ Exhaust System Complete system Superior power and performance - horsepower improved throughout the rpm range Factory forward engineering centralizes mass, improves handling NOTE: Will not pass 2025 FIM sound regulation Features FMF Megabomb header.
Supplier reference: 18300410
Manufacturer reference: 044438
Dimensions & specification
- Weight Imperial
- 5 lb
- Design/Configuration
- 1-Into-1 System
- Muffler Material
- Titanium
- Weight
- 2,27 kg (5 lb)
- Model
- Factory 4.1
- Riding Style
- ATV
- Pipe Material
- Stainless Steel
- Product Name
- Exhaust System
- Type
- Full System
- End Cap Material
- Carbon Fiber
- Weight Metric
- 2.27 kg
- Muffler Color/Finish
- Anodized Blue
- Units
- Each
Delivery & returns
UK standard delivery: 6–10 working days. In-stock parts dispatch within 2–3 working days.
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Vehicle fitment
All 35 supplier-listed applications. Match your complete model, year, position and any notes.
| Make | Model & variant | Year | Vehicle type | Vehicle ID | Variant | Market |
|---|---|---|---|---|---|---|
| YAMAHA | YFZ 450 R | 2009 | 28585 | ALL | ||
| YAMAHA | YFZ 450 R | 2010 | 28593 | ALL | ||
| YAMAHA | YFZ 450 R | 2011 | 50091 | ALL | ||
| YAMAHA | YFZ 450 R | 2012 | 68247 | ALL | ||
| YAMAHA | YFZ 450 R | 2013 | 79387 | ALL | ||
| YAMAHA | YFZ 450 R | 2014 | 86399 | ALL | ||
| YAMAHA | YFZ 450 R | 2015 | 89439 | ALL | ||
| YAMAHA | YFZ 450 R | 2016 | 99277 | ALL | ||
| YAMAHA | YFZ 450 R | 2017 | 101039 | ALL | ||
| YAMAHA | YFZ 450 R | 2018 | 105169 | AMERICA | ||
| YAMAHA | YFZ 450 R | 2019 | 109939 | ALL | ||
| YAMAHA | YFZ 450 R | 2020 | 117961 | ALL | ||
| YAMAHA | YFZ 450 R | 2021 | 141707 | ALL | ||
| YAMAHA | YFZ 450 R | 2022 | 156556 | ALL | ||
| YAMAHA | YFZ 450 R | 2023 | 156557 | ALL | ||
| YAMAHA | YFZ 450 R | 2024 | 169593 | ALL | ||
| YAMAHA | YFZ 450 R | 2025 | 186749 | ALL | ||
| YAMAHA | YFZ 450 R | 2026 | 209784 | ALL | ||
| YAMAHA | YFZ 450 R | 2027 | 217617 | ALL | ||
| YAMAHA | YFZ 450 RSE | 2009 | 28587 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2010 | 28595 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2011 | 50093 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2012 | 68249 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2013 | 79389 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2014 | 86401 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2015 | 89441 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2016 | 99279 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2017 | 101035 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2018 | 105167 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2019 | 109937 | Special Edition | ALL | |
| YAMAHA | YFZ 450 RSE | 2020 | 117959 | Special Edition | ALL | |
| YAMAHA | YFZ 450 X | 2010 | 1TD | 28589 | AMERICA | |
| YAMAHA | YFZ 450 X | 2011 | 1TD | 50095 | AMERICA | |
| YAMAHA | YFZ 450 XBB | 2010 | 1TD | 28591 | Bill Ballance Edition | AMERICA |
| YAMAHA | YFZ 450 XSE | 2011 | 1TD | 50097 | Special Edition | AMERICA |