CYLINDER KIT 77mm YAMAHA 05-13 YZF 250 MX-09150-2K NAMURA PISTON
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with
Namura CYLINDER KIT 77mm MX-09150-2K. This kit includes a 77mm Psychic cylinder with a Nikasil plated sleeve, a Namura top end gasket set NX-40032T, and a Namura Hyperdryve piston kit NX-40033. The cylinder is cast from AB4C aluminum with Nikasil plated sleeves for superior wear capabilities and is designed to OEM specifications. Sleeve hardness is HV500-600 with a thickness of 0.08 +/- 0.02mm. The cylinder material is JIS AC4B-T6 Aluminum with a hardness of HR65up. Cross reference numbers are 5UL-11311-00-00 and 5XC-11311-20-00.
- SKU
- 56-K103.77.KIT2
- Brand
- Dirt Racing
- Availability
- In Stock (7)
Fitments (59)
| Make | Model | Year |
|---|---|---|
| GAS-GAS | EC R 250 | 2010 |
| GAS-GAS | EC R 250 | 2011 |
| GAS-GAS | EC R 250 | 2012 |
| GAS-GAS | EC R 250 | 2013 |
| GAS-GAS | EC R 250 | 2014 |
| GAS-GAS | EC R 250 | 2015 |
| YAMAHA | WR 250F | 2001 |
| YAMAHA | WR 250F | 2002 |
| YAMAHA | WR 250F | 2003 |
| YAMAHA | WR 250F | 2004 |
| YAMAHA | WR 250F | 2005 |
| YAMAHA | WR 250F | 2006 |
| YAMAHA | WR 250F | 2007 |
| YAMAHA | WR 250F | 2008 |
| YAMAHA | WR 250F | 2009 |
| YAMAHA | WR 250F | 2010 |
| YAMAHA | WR 250F | 2011 |
| YAMAHA | WR 250F | 2012 |
| YAMAHA | WR 250F | 2013 |
| YAMAHA | WR 250F | 2014 |
| YAMAHA | WRF 250 | 2001 |
| YAMAHA | WRF 250 | 2002 |
| YAMAHA | WRF 250 | 2003 |
| YAMAHA | WRF 250 | 2004 |
| YAMAHA | WRF 250 | 2005 |
| YAMAHA | WRF 250 | 2006 |
| YAMAHA | WRF 250 | 2007 |
| YAMAHA | WRF 250 | 2008 |
| YAMAHA | WRF 250 | 2009 |
| YAMAHA | WRF 250 | 2010 |
| YAMAHA | WRF 250 | 2011 |
| YAMAHA | WRF 250 | 2012 |
| YAMAHA | WRF 250 | 2013 |
| YAMAHA | YZ 250F | 2001 |
| YAMAHA | YZ 250F | 2002 |
| YAMAHA | YZ 250F | 2003 |
| YAMAHA | YZ 250F | 2004 |
| YAMAHA | YZ 250F | 2005 |
| YAMAHA | YZ 250F | 2006 |
| YAMAHA | YZ 250F | 2007 |
| YAMAHA | YZ 250F | 2008 |
| YAMAHA | YZ 250F | 2009 |
| YAMAHA | YZ 250F | 2010 |
| YAMAHA | YZ 250F | 2011 |
| YAMAHA | YZ 250F | 2012 |
| YAMAHA | YZ 250F | 2013 |
| YAMAHA | YZF 250 | 2001 |
| YAMAHA | YZF 250 | 2002 |
| YAMAHA | YZF 250 | 2003 |
| YAMAHA | YZF 250 | 2004 |
| YAMAHA | YZF 250 | 2005 |
| YAMAHA | YZF 250 | 2006 |
| YAMAHA | YZF 250 | 2007 |
| YAMAHA | YZF 250 | 2008 |
| YAMAHA | YZF 250 | 2009 |
| YAMAHA | YZF 250 | 2010 |
| YAMAHA | YZF 250 | 2011 |
| YAMAHA | YZF 250 | 2012 |
| YAMAHA | YZF 250 | 2013 |
- General Product Group
- Engine
- General Product Type
- Cylinder Kits
- General Size
- 77mm
- Variant Id
- 252593
FULL DESCRIPTION
Namura Cylinder Kit for Yamaha and Gas Gas Off-Road Motorcycles
This comprehensive Namura cylinder kit is designed to restore your motorcycle's engine to peak performance. Engineered to meet or exceed OEM specifications, this kit features a high-quality cylinder with a durable NIKASIL plated sleeve for exceptional wear resistance and longevity.
The cylinder is cast from AB4C aluminum, ensuring robust construction. The NIKASIL plating provides a hardness of HV500-600 and a thickness of 0.08 +/- 0.02mm, contributing to superior operational life. The cylinder material itself is JIS AC4B-T6 Aluminum with a hardness of HR65up, guaranteeing strength and reliability.
This kit includes all the necessary components for a complete cylinder rebuild:
- Psychic Cylinder (77mm Bore): Part No. MX-09150-2K. This is a direct replacement part designed for drop-in installation with no modifications to the engine case required.
- Top End Gasket Set: Part No. NX-40032T. High-quality gaskets to ensure a perfect seal.
- Namura Hyperdryve Piston Kit (77mm): Part No. NX-40033. A precision-engineered piston designed for optimal power and efficiency.
This Namura cylinder kit is crafted to provide outstanding durability and performance for your off-road machine.
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
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.
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.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


