CYLINDER WORKS - 20002-K01 - Cylinder Kit - Standard Bore - 77.00 mm - Yamaha
The CYLINDER WORKS 20002-K01 is a complete cylinder kit for 2001-2004 Yamaha YZ250F and WR250F off-road bikes with a standard 77.00 mm bore, 249 cc displacement, and 12.7:1 compression ratio, featuring a nickel-silicon carbide plated cylinder paired with matched Vertex pistons to ensure longevity and reduce engine noise, complete with gaskets, rings, pin, and clips — ready to bolt on without machine work, made in the USA.
Features
- Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders
- Cylinder kit includes matched Vertex pistons to ensure longevity, performance and reduced engine noise
- Nickel Silicon Carbide plated for long life
- Kit comes complete with gaskets, cylinder, piston, rings, pin and clips
- Made in the USA
- Big bore cylinders do not require machine work.
OEM Part Numbers: 5NL-11181-00-00, 5NL-11311-00-00, 5NL-11351-00-00, 5NL-11603-00-00, 5NL-11631-00-00, 5NL-11631-10-00, 5NL-11633-00-00, 5UL-11311-00-00, 5XC-11311-00-00, 5XC-11311-10-00, 93420-16086-00
Specs
- Cylinder Diameter: 77,00 mm
- Displacement: 249 cc
- Product Name: Cylinder Kit
- Cylinder Bore Coating: Nickel-Silicon Carbide
- Overbore: Standard
- Compression Ratio: 12.7:1
- Engine Type: 4-Cycle
- Color/Finish: Gray
- Units: Kit
- Cylinder Diameter: 77.00 mm
- Riding Style: Off-Road
- Style: Standard
OEM Part Numbers
- 5NL-11181-00-00, 5NL-11311-00-00, 5NL-11351-00-00, 5NL-11603-00-00, 5NL-11631-00-00, 5NL-11631-10-00, 5NL-11633-00-00, 5UL-11311-00-00, 5XC-11311-00-00, 5XC-11311-10-00, 93420-16086-00
Frequently Asked Questions - CYLINDER WORKS - 20002-K01 - Cylinder Kit - Standard Bore - 77.00 mm - Yamaha
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
