Cylinder Works Big Bore Cylinder Kit 11010-K01 — Honda CRF450R / CRF450RX 2017-2018

Product Description

Take your 450cc machine to the next level with the Cylinder Works Big Bore Cylinder Kit. Engineered to increase your displacement to 480cc, this kit is the ultimate performance upgrade for riders seeking a massive boost in torque, acceleration, and overall engine power. This complete, bolt-on solution requires no machine work, allowing you to maximize your engine's potential with ease.

Each kit is proudly made in the USA and includes a high-quality cylinder featuring a durable nickel silicon carbide sleeve for reduced friction and superior heat dissipation. To ensure long-lasting performance, we pair this with a precision-matched Vertex piston, which reduces engine noise while maintaining consistent compression. With a 13.5:1 compression ratio, this kit provides a noticeable increase in throttle response, making it perfect for both track and off-road racing.

Top Features: Cylinder Works Big Bore Kit

• Increases displacement to 480cc for massive power gains
• Includes matching Vertex pistons for optimal longevity and low noise
• Advanced nickel silicon carbide cylinder coating for superior heat management
• Complete kit: includes cylinder, pistons, rings, pin, clips, and gaskets
• Precision-engineered, bolt-on design—no machine work required
• Proudly made in the USA

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

Fitment List

Frequently Asked Questions

Q: Will this kit affect the reliability of my engine?
A: Cylinder Works kits are engineered to be extremely reliable. By using high-quality Vertex pistons and nickel silicon carbide coatings, this kit is designed to handle the increased displacement while maintaining excellent durability when properly maintained.

Q: Do I need to re-map my fuel injection (EFI)?
A: Yes. Increasing your displacement to 480cc requires more fuel to maintain the correct air/fuel ratio. We highly recommend using a fuel tuner or an updated ECU map to ensure your bike performs safely and efficiently.

Expert Pro-Tip: When installing a big bore kit, proper ring break-in is essential. Do not let the bike idle for long periods during the first heat cycle. Instead, take it for a moderate ride, varying the throttle—avoid sustained high RPMs initially—then let it cool down completely. This procedure helps the rings seat properly against the cylinder wall for maximum compression.

Recommended Pairings:
o Honda CRF450R Performance Parts & Upgrades
o Honda 4-Stroke Performance Parts
o Premium Motorcycle Chemicals Performance Parts

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.

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