TOP END GASKET SET +5.60mm BIG BORE 72.00mm YAMAHA YZ 2T 250 1999 - 2025 CYLINDER WORKS 21009-G01
4.4 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
Cylinder Works Big Bore Gasket Kit for +5.60mm big bore applications with a 72mm cylinder diameter. Compatible with Cylinder Works 21009-K01 Cylinder Kit. Includes head, base, exhaust, intake reed, and power valve cover gaskets for reliable top-end sealing and performance. Size over standard is +5.60 mm.
- SKU
- 56-K156.72.GKCW
- Brand
- Cylinder Works
- Availability
- In Stock (2)
Fitments (36)
| Make | Model | Year |
|---|---|---|
| YAMAHA | YZ 250 | 2003 |
| YAMAHA | YZ 250 | 2004 |
| YAMAHA | YZ 250 | 2005 |
| YAMAHA | YZ 250 | 2006 |
| YAMAHA | YZ 250 | 2007 |
| YAMAHA | YZ 250 | 2008 |
| YAMAHA | YZ 250 | 2009 |
| YAMAHA | YZ 250 | 2010 |
| YAMAHA | YZ 250 | 2011 |
| YAMAHA | YZ 250 | 2012 |
| YAMAHA | YZ 250 | 2013 |
| YAMAHA | YZ 250 | 2014 |
| YAMAHA | YZ 250 | 2015 |
| YAMAHA | YZ 250 | 2016 |
| YAMAHA | YZ 250 | 2017 |
| YAMAHA | YZ 250 | 2018 |
| YAMAHA | YZ 250 | 2019 |
| YAMAHA | YZ 250 | 2020 |
| YAMAHA | YZ 250 | 2021 |
| YAMAHA | YZ 2T 250 | 2003 |
| YAMAHA | YZ 2T 250 | 2004 |
| YAMAHA | YZ 2T 250 | 2005 |
| YAMAHA | YZ 2T 250 | 2006 |
| YAMAHA | YZ 2T 250 | 2007 |
| YAMAHA | YZ 2T 250 | 2008 |
| YAMAHA | YZ 2T 250 | 2009 |
| YAMAHA | YZ 2T 250 | 2010 |
| YAMAHA | YZ 2T 250 | 2011 |
| YAMAHA | YZ 2T 250 | 2012 |
| YAMAHA | YZ 2T 250 | 2013 |
| YAMAHA | YZ 2T 250 | 2014 |
| YAMAHA | YZ 2T 250 | 2015 |
| YAMAHA | YZ 2T 250 | 2016 |
| YAMAHA | YZ 2T 250 | 2017 |
| YAMAHA | YZ 2T 250 | 2018 |
| YAMAHA | YZ 2T 250 | 2019 |
- Variant Id
- 322851
FULL DESCRIPTION
Cylinder Works Top End Gasket Set for Big Bore Applications
This Cylinder Works Top End Gasket Set is engineered for big bore motorcycle engine builds, specifically designed to complement the Cylinder Works 21009-K01 Cylinder Kit. It provides all the essential gaskets needed for a comprehensive top-end rebuild, ensuring optimal sealing and performance for modified engines. The kit is crucial for maintaining compression and preventing leaks in high-displacement applications.
Key Features:
- Specifically designed for +5.6mm big bore configurations.
- Compatible with the Cylinder Works 21009-K01 Cylinder Kit.
- Includes all necessary gaskets for the top end: head, base, exhaust, intake reed, and power valve cover.
- Promotes reliable sealing and contributes to the overall performance and longevity of high-performance engines.
Specifications:
- Intended for cylinder diameters of 72 mm.
- Designed for big bore cylinder kits.
- Represents an increase of +5.60 mm over standard bore size.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
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.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.