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eBay£693.99Visit shop Athena Cylinder Full Kit 65mm Yamaha/derbi 125, Athena P400485100010 170cc Big B
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This Athena Cylinder Kit is designed for Yamaha DT125R 1988-2002 models and owners seeking enhanced performance from their offroad vehicles. It offers a significant power increase and improved durability due to its aluminum construction and specialized coatings. A key caveat is that it requires specialized high-performance power valves and cannot use OEM parts.
| Colour | Silver |
|---|---|
| Model Part Number | P400485100010 |
| Brand | Athena |
This is a 170 cc Big Bore Cylinder Kit with a racing diameter of 65 mm.
No, this kit requires the use of its specially designed, high-performance hard anodized power valves. OEM power valves are not compatible.
It fits the Derbi GPR 125, Yamaha DT 125 R/RE/X, Yamaha TDR 125, and Yamaha TZR 125 R / RR models.
Due to the critical nature of engine components, professional installation by a qualified mechanic is highly recommended for optimal performance and to prevent potential damage.
The aluminum construction aids in heat dissipation, while the nickel-carbide coating provides superior wear resistance and durability.
Yes, the high-quality materials and race-proven design are intended to maximize both performance and service life when properly installed and maintained.
While the kit is designed to enhance performance, other supporting modifications such as carburetor tuning and potentially exhaust upgrades may be beneficial for optimal results. Professional advice is recommended.
Verify correct installation of the power valves, check ignition timing, ensure proper carburetor jetting for the increased displacement, and confirm no air leaks in the intake or exhaust system.
Check coolant level and condition, ensure radiator is clean and free of obstructions, verify fan operation (if applicable), and confirm the water pump is functioning correctly. The larger water jackets require adequate coolant flow.
Verify correct oil-to-fuel mixture (if applicable for 2-stroke), check piston ring seal, and ensure carburetor is not running excessively rich.
Check piston-to-cylinder clearance, confirm proper torque on cylinder head bolts, and ensure the crankshaft and connecting rod are in good condition. Any abnormal noise should be investigated immediately by a professional.
Compatibility: This kit is specifically designed for the Yamaha DT 125 R/RE/X, TDR 125, and TZR 125 R / RR models from 1988-2002, as well as the Derbi GPR 125. It is crucial to ensure your vehicle is listed within these specifications. Note: This kit requires the use of its specially designed high-performance power valves; OEM power valves cannot be used.
Setup: Installation requires advanced mechanical knowledge. It is highly recommended to have this kit installed by a qualified motorcycle mechanic. Proper engine assembly, including correct piston ring gap, cylinder head torque, and timing adjustments, is essential for optimal performance and to prevent damage. Ensure all mating surfaces are clean and free of debris before assembly.
Care: Regular maintenance is key. Monitor coolant levels closely due to the increased performance. Inspect spark plugs periodically to ensure optimal combustion. The aluminum cylinder benefits from good airflow and regular cleaning of the bike's cooling fins. Avoid aggressive jetting or tuning without proper knowledge, as this can lead to premature wear.
