Cylinder Works Big Bore Cylinder Kit (80.00 mm) 31001-K01 - Kawasaki / Suzuki 250cc 2004-2008

Product Description

The Cylinder Works 31001-K01 big bore cylinder kit increases displacement to 270 cc, delivering enhanced horsepower and torque for your dirt bike engine. Designed with an 80.00 mm cast aluminum construction, this kit looks virtually identical to OEM cylinders while providing a direct bolt-on performance upgrade.

Engineered with a durable nickel silicon carbide cylinder sleeve for extended wear resistance, the assembly comes complete with a precision-matched Vertex piston kit, rings, wrist pin, circlips, and top-end gaskets to ensure a reliable high-compression seal.

Top Features: Cylinder Works Big Bore Cylinder Kit

• Increases engine displacement to 270 cc for aggressive power gains across the RPM range.
• Includes a precision-matched Vertex piston kit to optimize longevity, performance, and mechanical quietness.
• Durable nickel silicon carbide cylinder sleeve delivers exceptional wear resistance and long service life.
• Kit arrives complete with the cylinder, pistons, rings, pin, clips, and top-end gaskets.

Please review the detailed compatibility data below to ensure an exact fitment match for your dirt bike before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: What displacement does this big bore kit yield out of the box?
A: This kit brings your engine displacement to 270 cc, and can reach 285 cc when paired with Hot Rods crankshaft #4181.

Q: What components are included in the package?
A: The kit includes the big bore cylinder, a matched Vertex piston kit (pistons, rings, pin, and clips), and a complete top-end gasket kit.

Q: Does this cylinder require custom machining to fit?
A: No, it is designed as a direct bolt-on installation featuring an 80.00 mm bore size and cast aluminum construction.

Expert Pro-Tip: Always thoroughly wash your new cylinder with hot soapy water and a nylon brush to clear out any microscopic manufacturing residue before assembly. Measure your ring end gaps during installation to ensure they fall within factory specifications, and use clean engine oil on the cylinder wall and piston skirt prior to sliding the cylinder down.

Recommended Pairings:

• Kawasaki 4-Stroke Performance Parts
• Engine Rebuild Kits Collection
• Off-Road Motorcycle Tools

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