🛠️ Cylinder Works Big Bore Cylinder Kit 80.00mm (+3.0) 12.6:1 – KX250F / RM-Z250 (2004–2008)

Turn your 250F into a true holeshot hunter. This Cylinder Works 80.0mm big-bore kit bumps displacement to ≈269cc (from 249cc) with a high-compression 12.6:1 setup. Stock-look plated cylinder, a matched Vertex piston kit, and top-end gaskets deliver bolt-on power with OEM-style reliability—no machining required.

✅ What’s Included

• 80.00 mm nickel–silicon-carbide plated cylinder (stock-appearance casting)

• Vertex piston kit (piston, rings, wrist pin, circlips) matched to the bore

• Top-end gasket kit (valve stem seals not included)

📦 Fitment

Kawasaki KX250F — 2004, 2005, 2006, 2007, 2008
Suzuki RM-Z250 — 2004, 2005, 2006

🛡️ Warranty Info

All components are new and backed by the manufacturer’s limited warranty against defects in materials and workmanship.

🔑 Key Features

• Big bore to ≈269cc for stronger mid-range and top-end pull

• 12.6:1 compression for crisp throttle response (pump premium recommended)

• Nikasil (nickel–silicon-carbide) plating for durability and heat transfer

• Matched Vertex piston reduces noise and enhances longevity

• Cylinder looks just like stock; seamless OEM fit

• No machine work needed; service parts (pistons, rings, gaskets) available