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eBay£1,026.86Visit shop ATHENA Cylinder kit-Ø68mm Yamaha yfz350 Banshee for Moto Spare Parts Accessories
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This Athena Big Bore Race Cylinder Kit is designed for Yamaha YFZ350 owners (1987-2006) seeking a significant performance upgrade. Its primary benefit is increased engine power and responsiveness through a larger displacement. A key consideration is that it requires specially designed, high-performance power valves, meaning OEM parts cannot be used. The kit includes an aluminum cylinder with a nickel carbide coating, a high-performance cylinder head, power valves, a complete top-end gasket set, and a cast piston kit.
| Model Part Number | P400485100024 |
|---|---|
| Brand | Athena |
The primary advantage is a significant increase in engine displacement, leading to higher horsepower and torque output for improved performance.
No, this kit requires specially designed, high-performance power valves as the OEM parts cannot be used.
The cylinder is made of aluminum with a durable nickel carbide coating.
Yes, the kit includes a cast lite flat top piston, rings, clips, and pin.
This kit is designed for the Yamaha YFZ350 models from 1987 to 2006.
Due to the complexity of the installation, professional installation by a qualified mechanic is highly recommended.
Regular checks of oil levels, air filter cleanliness, and periodic inspection of power valves and cylinder wear are crucial for optimal performance and longevity.
Verify correct installation of power valves, check for air leaks in the intake and exhaust, ensure proper carburetor jetting for the new displacement.
Confirm proper coolant flow (if applicable), check for obstructions in cooling fins, ensure the fuel mixture is not too lean, verify the cylinder head is properly seated.
Check piston-to-cylinder wall clearance, ensure piston pin retaining clips are securely installed, verify correct installation of all internal components.
Double-check the model year compatibility of your YFZ350. Ensure no incorrect parts are being used from other kits or the original engine.
Compatibility: This kit is specifically designed for Yamaha YFZ350 models manufactured between 1987 and 2006. Ensure your model year falls within this range before purchasing.
Setup: Installation requires significant mechanical expertise. It involves disassembling the top end of the engine, replacing the stock cylinder and piston, and installing the new power valves. Proper torque specifications for all fasteners must be followed. It is highly recommended to consult a service manual for your specific YFZ350 model and to use the included Athena top-end gasket set for optimal sealing.
Care: After installation and during operation, regular maintenance is crucial. Monitor engine oil levels closely, as higher performance engines can consume oil faster. Ensure the air filter is clean to prevent debris from entering the engine. Periodically inspect the power valves and cylinder for any signs of wear or damage. Adhering to a strict maintenance schedule will ensure the longevity and performance of the kit.
