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CYLINDER FULL KIT +5.60mm BIG BORE 72.00mm NEW VERSION YAMAHA 2003 - 2025 YZ 2T 250 ATHENA P400485100104

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Complete big bore cylinder kit featuring a newly engineered cylinder, piston, head, and associated components. This updated version incorporates revised internal geometries and improved component design to deliver increased engine output, consistent combustion behaviour, and dependable operation across varying engine speeds. Kit includes cylinder, piston, head, and gasket set. Redesigned cylinder with revised port timing for improved gas flow. Direct replacement kit for standard engine configuration. Bore size: 72.00 mm. Bore increase: +5.60 mm. Application: 2-stroke engine. Manufacturer part number: P400485100104.

Specifications
SKU
56-K156.72.CKA_V2
Brand
Athena
Availability
In Stock (1)

Fitments (36)

MakeModelYear
YAMAHAYZ 2502003
YAMAHAYZ 2502004
YAMAHAYZ 2502005
YAMAHAYZ 2502006
YAMAHAYZ 2502007
YAMAHAYZ 2502008
YAMAHAYZ 2502009
YAMAHAYZ 2502010
YAMAHAYZ 2502011
YAMAHAYZ 2502012
YAMAHAYZ 2502013
YAMAHAYZ 2502014
YAMAHAYZ 2502015
YAMAHAYZ 2502016
YAMAHAYZ 2502017
YAMAHAYZ 2502018
YAMAHAYZ 2502019
YAMAHAYZ 2502020
YAMAHAYZ 2502021
YAMAHAYZ 2T 2502003
YAMAHAYZ 2T 2502004
YAMAHAYZ 2T 2502005
YAMAHAYZ 2T 2502006
YAMAHAYZ 2T 2502007
YAMAHAYZ 2T 2502008
YAMAHAYZ 2T 2502009
YAMAHAYZ 2T 2502010
YAMAHAYZ 2T 2502011
YAMAHAYZ 2T 2502012
YAMAHAYZ 2T 2502013
YAMAHAYZ 2T 2502014
YAMAHAYZ 2T 2502015
YAMAHAYZ 2T 2502016
YAMAHAYZ 2T 2502017
YAMAHAYZ 2T 2502018
YAMAHAYZ 2T 2502019
SKU
56-K156.72.CKA_V2
Brand
Athena
Availability
In Stock (1)
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Athena Big Bore Cylinder Kit for Yamaha YZ 250 2-Stroke

Upgrade your Yamaha YZ 250 2-stroke with this complete Big Bore Cylinder Kit from Athena. This new version features a redesigned cylinder, piston, head, and associated components for enhanced engine performance, consistent combustion, and reliable operation. The revised internal geometries and improved component design contribute to increased power output across the engine's speed range.

Key Features:

  • Complete kit includes cylinder, piston, head, and gasket set.
  • Redesigned cylinder with revised port timing for optimized gas flow.
  • Engineered for a direct replacement of the standard engine configuration.
  • Specifically designed for 2-stroke engines.

Specifications:

  • Bore Size: 72.00 mm
  • Bore Increase: +5.60 mm
  • Manufacturer Part Number: P400485100104
Before you buy

QUESTIONS? JUST ASK

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Call us+44 330 133 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.

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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