Cylinder Works Standard Bore Cylinder Kit 77mm - KX250F / RM-Z250 (2004-2006)
Cylinder Works Standard Bore Cylinder Kit 77mm - Kawasaki KX250F / Suzuki RM-Z250
Complete cylinder kit restores your KX250F or RM-Z250 to factory 250cc displacement. 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 standard bore cylinder
- Vertex matched piston
- Piston rings
- Wrist pin and clips
- Complete top end gasket kit
Key Features
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: 250cc
- Compression Ratio: 12.6:1
- Engine Type: 4-Stroke
- Material: Aluminum with Nikasil plating
- Weight: 3.3 lbs
Fitment
Kawasaki KX250F: 2004-2005
Suzuki RM-Z250: 2004-2006
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
110040003, 110040090, 110050005, 110050037, 110610025
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
