JT Sprocket For Yamaha DT125R 1988-2002 - Front - 17T

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This guide is for owners of Yamaha DT125R motorcycles (1988-2002) seeking to optimize their drivetrain. The JT Sprocket JTF558.17 offers enhanced strength-to-weight ratio for improved performance. A potential consideration is the specific fitment for the front 17-tooth configuration, requiring user confirmation for their exact model year and needs.
| Model Part Number | JTF558.17 |
|---|---|
| Brand | JT |
This JT Sprocket comes with a 1-year warranty.
This specific sprocket (JTF558.17) is designed for Yamaha DT125R models from 1988 to 2002. Always confirm your motorcycle's model year for compatibility.
A 17-tooth front sprocket typically offers a balance between acceleration and top-end speed. Compared to a smaller front sprocket, it will provide slightly less acceleration but a higher potential top speed. Conversely, compared to a larger front sprocket, it offers more acceleration but a lower top speed.
For optimal performance and longevity, it is recommended to clean and lubricate your drive chain and sprocket every 500-700 miles, or more frequently if riding in wet, dirty, or dusty conditions.
While this sprocket is designed to fit the Yamaha DT125R, it's best to use it with a drive chain that is compatible with the sprocket's pitch and width, as specified for your motorcycle model. Using an incompatible chain can lead to premature wear or failure.
JT Sprocket is a brand that manufactures aftermarket sprockets and other drivetrain components for motorcycles and other vehicles.
Double-check the motorcycle's model year and ensure it falls within the 1988-2002 range specified. Verify the part number JTF558.17 matches your needs. Confirm you are attempting to install it on the correct shaft (front countershaft).
Ensure the drive chain is correctly tensioned according to your service manual. Check that the sprocket is mounted securely and that no debris is caught between the sprocket and the engine casing. Inspect the chain for wear or damage.
This can be caused by poor chain lubrication, incorrect chain tension, or riding in extremely abrasive conditions. Ensure the chain is regularly cleaned, lubricated, and properly tensioned. Consider using a chain guard if one was not previously fitted.
Compatibility: This JT Sprocket is specifically designed for the Yamaha DT125R models produced between 1988 and 2002. Always verify your motorcycle's exact model year and existing sprocket size to ensure a correct fit. The manufacturer part number is JTF558.17.
Setup: Installation requires basic motorcycle maintenance knowledge. It is recommended to consult your motorcycle's service manual for detailed instructions. Typically, this involves removing the chain guard, loosening the rear axle nut, adjusting the chain tensioner to allow chain removal, and then removing the old sprocket. The new sprocket should be installed onto the countershaft, ensuring it is properly seated, and then secured with the original hardware. Reinstall the chain and adjust tension as per the service manual.
Care: Regular cleaning of the sprocket and drive chain is essential for optimal performance and longevity. Use a degreaser and a brush to remove dirt and grime. Inspect the sprocket teeth for wear or damage during routine maintenance. Ensure the drive chain is properly lubricated and tensioned. A properly maintained drivetrain will extend the life of both the sprocket and the chain.