2Bros Parts

CYLINDER KIT BIG BORE 2009-2018 YAMAHA YFZ450R WORKS CYLINDER 21003-K02

£658.75Only 1 left

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Cylinder Works +3mm Big Bore Complete Cylinder Kit increases displacement to 478cc. This direct bolt-on kit requires no re-plating and includes all necessary components for installation, featuring a matched Vertex piston for durability and performance. Features include direct bolt-on installation with no additional machining required, Nickel Silicon Carbide plating for extended lifespan, and honing to exact size for easy piston installation. Big bore cylinders do not require additional machine work unless specified. Includes cylinder, piston assembly, and top-end gasket set. Bore is +3mm and displacement is 478cc. Uses Vertex Piston #23403. Cross-references YAMAHA OEM Part Number 2S2-11311-10-00.

Specifications
SKU
56-K172.98.CKW
Brand
Cylinder Works
Availability
In Stock (1)

Fitments (57)

MakeModelYear
YAMAHAYFZ 450 Bill Balance Edition2010
YAMAHAYFZ 450R2009
YAMAHAYFZ 450R2010
YAMAHAYFZ 450R2011
YAMAHAYFZ 450R2012
YAMAHAYFZ 450R2013
YAMAHAYFZ 450R2014
YAMAHAYFZ 450R2015
YAMAHAYFZ 450R2016
YAMAHAYFZ 450R2017
YAMAHAYFZ 450R Special Edition2010
YAMAHAYFZ 450R Special Edition2011
YAMAHAYFZ 450R Special Edition2012
YAMAHAYFZ 450R Special Edition2013
YAMAHAYFZ 450S2004
YAMAHAYFZ 450S2005
YAMAHAYFZ 450S2006
YAMAHAYFZ 450S2007
YAMAHAYFZ 450S2008
YAMAHAYFZ 450S2009
YAMAHAYFZ 450S2010
YAMAHAYFZ 450S2011
YAMAHAYFZ 450X2010
YAMAHAYFZ 450X2011
YAMAHAYFZ 450X Special Edition2011
YAMAHAYFZ BILL BALANCE EDITION 4502010
YAMAHAYFZ R 4502009
YAMAHAYFZ R 4502010
YAMAHAYFZ R 4502011
YAMAHAYFZ R 4502012
YAMAHAYFZ R 4502013
YAMAHAYFZ R 4502014
YAMAHAYFZ R 4502015
YAMAHAYFZ R 4502016
YAMAHAYFZ R 4502017
YAMAHAYFZ S 4502004
YAMAHAYFZ S 4502005
YAMAHAYFZ S 4502006
YAMAHAYFZ S 4502007
YAMAHAYFZ S 4502008
YAMAHAYFZ S 4502009
YAMAHAYFZ S 4502010
YAMAHAYFZ S 4502011
YAMAHAYFZ S 4502012
YAMAHAYFZ S 4502013
YAMAHAYFZ X 4502010
YAMAHAYFZ X 4502011
YAMAHAYFZ X 4502012
YAMAHAYFZ X 4502013
YAMAHAYFZ X 4502014
YAMAHAYFZ X 4502015
YAMAHAYFZ X 4502016
YAMAHAYFZ X 4502017
YAMAHAYFZ X 4502018
YAMAHAYFZ X 4502019
YAMAHAYFZ X 4502020
YAMAHAYFZ X 4502021
General Product Group
Engine
General Product Type
Cylinder Kits
Variant Id
283296
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Cylinder Works Big Bore Cylinder Kit for Yamaha YFZ450R/X

Upgrade your Yamaha YFZ450R or YFZ450X with this complete Big Bore Cylinder Kit from Cylinder Works. This kit increases the engine displacement to 478cc for enhanced power and performance. Designed as a direct bolt-on, it requires no re-plating or additional machining, simplifying the installation process.

Key Features:

  • Increases displacement to 478cc for greater power output.
  • Direct bolt-on installation requires no additional machining.
  • Nickel Silicon Carbide plated cylinder for superior durability and extended lifespan.
  • Honed to precise dimensions for effortless piston installation.
  • Includes a matched Vertex piston for optimal performance and reliability.
  • No re-plating necessary, saving time and effort.

Included Components:

  • Cylinder
  • Piston assembly (Vertex Piston #23403)
  • Top-end gasket set

Specifications:

  • Bore Size: +3mm
  • Total Displacement: 478cc
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.

Call us0330 133 3748
Email us[email protected]

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

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

More answers in our FAQ.

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