Cylinder Works High Compression Cylinder Kit 77mm - Yamaha YZ250F / WR250F (2001-2013)
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Cylinder Works High Compression Cylinder Kit 77mm - Yamaha YZ250F / WR250F
Complete high compression cylinder kit for your YZ250F or WR250F. Higher compression ratio delivers more power and improved throttle response. Includes Vertex matched piston, Nikasil plated cylinder, and full gasket kit. Direct bolt-on replacement with no machine work required. Made in the USA.
What's Included
- Cylinder Works 77mm high compression cylinder
- Vertex matched piston
- Piston rings
- Wrist pin and clips
- Complete top end gasket kit
Key Features
High compression design for increased power output. Nikasil plated cylinder for long life and excellent heat transfer. Vertex piston ensures longevity and reduced engine noise. Looks virtually identical to OEM. Direct bolt-on installation with no machine work required.
Specifications
- Bore Size: 77mm (standard)
- Displacement: 249cc
- Compression Ratio: 13.5:1 (High Compression)
- Engine Type: 4-Stroke
- Material: Aluminum with Nikasil plating
- Weight: 3.33 lbs
Fitment
Yamaha YZ250F: 2001-2007
Yamaha WR250F: 2001-2013
Why Cylinder Works?
Cylinder Works is a trusted name in powersports engine components. Their cylinders and kits are manufactured in the USA to strict tolerances. Used by professional racers and weekend riders who demand reliability.
OEM Reference Numbers
5NL111810000, 5NL113110000, 5NL113510000, 5NL116030000, 5NL116310000
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
