CYLINDER KIT YZF450 14-17 99mm, WORKS CYLINDER 21005-K02 BIG BORE
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Cylinder Works +2mm Big Bore 99mm Cylinder Kit for the Yamaha YZ450F, WR450F, and YZ450FX increases displacement to 468cc. This direct bolt-on kit requires no re-plating and includes a matched Vertex piston for durability, performance, and reduced engine noise. Features include direct bolt-on installation with no additional machining required, Nickel Silicon Carbide plated for extended lifespan, and three options available: Standard Bore, Standard Bore High Compression, and Big Bore. The kit includes cylinder, piston, rings, pin, clips, and top-end gasket kit. Big bore cylinder kits do not require additional machine work unless specified. Replacement Vertex piston, rings, clips, and pins available separately. Manufactured in the U.S.A. Bore is 99mm (+2mm), displacement is 468cc, and compression ratio is 12.5:1. Uses Vertex Piston #23655.
- SKU
- 56-K165.099.CKW
- Brand
- Cylinder Works
- Availability
- In Stock (1)
Fitments (26)
| Make | Model | Year |
|---|---|---|
| YAMAHA | WR 450F | 2016 |
| YAMAHA | WR 450F | 2017 |
| YAMAHA | WR 450F | 2018 |
| YAMAHA | YZ 450F | 2010 |
| YAMAHA | YZ 450F | 2011 |
| YAMAHA | YZ 450F | 2012 |
| YAMAHA | YZ 450F | 2013 |
| YAMAHA | YZ 450F | 2014 |
| YAMAHA | YZ 450F | 2015 |
| YAMAHA | YZ 450F | 2016 |
| YAMAHA | YZ 450F | 2017 |
| YAMAHA | YZ 450F | 2018 |
| YAMAHA | YZ 450F | 2019 |
| YAMAHA | YZ 450FX | 2016 |
| YAMAHA | YZ 450FX | 2017 |
| YAMAHA | YZ 450FX | 2018 |
| YAMAHA | YZ 450FX | 2019 |
| YAMAHA | YZ 450FX | 2020 |
| YAMAHA | YZF 450 | 2010 |
| YAMAHA | YZF 450 | 2011 |
| YAMAHA | YZF 450 | 2012 |
| YAMAHA | YZF 450 | 2013 |
| YAMAHA | YZF 450 | 2014 |
| YAMAHA | YZF 450 | 2015 |
| YAMAHA | YZF 450 | 2016 |
| YAMAHA | YZF 450 | 2017 |
- General Product Group
- Engine
- General Product Type
- Cylinder Kits
- General Size
- 99mm
- Variant Id
- 253005
FULL DESCRIPTION
Cylinder Works +2mm Big Bore Cylinder Kit for Yamaha YZF/WRF 450
Upgrade your Yamaha's performance with the Cylinder Works +2mm Big Bore Cylinder Kit. This kit increases displacement to 468cc, delivering enhanced power and torque. Designed for a direct bolt-on installation, it requires no re-plating or additional machining, making installation straightforward. The Nickel Silicon Carbide plating ensures exceptional durability and an extended lifespan for the cylinder.
This comprehensive kit includes a matched Vertex piston, renowned for its performance and ability to reduce engine noise. With this kit, you get everything needed for a top-end rebuild, ensuring your motorcycle runs at its peak.
Key Features:
- Increases displacement to 468cc for improved performance.
- Direct bolt-on design simplifies installation with no additional machining needed.
- Nickel Silicon Carbide plated cylinder for superior durability and longevity.
- Includes a high-quality Vertex piston for optimal performance and reduced noise.
- Complete kit includes cylinder, piston, rings, pin, clips, and top-end gasket set.
- Manufactured in the U.S.A.
Specifications:
- Bore: 99mm (+2mm)
- Displacement: 468cc
- Compression Ratio: 12.5:1
- Uses Vertex Piston #23655
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
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.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. 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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Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
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