JT Steel Sprocket Rear Black 47T
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Product Information
Full details
This guide is for Yamaha YZ125 owners (1999-2021) seeking a durable and reliable rear sprocket. The JT Steel Sprocket offers enhanced longevity due to its high-carbon steel construction, providing a key benefit of extended wear life. A potential caveat is that steel sprockets are generally heavier than aluminum alternatives, which might be a consideration for weight-sensitive riders. This rear sprocket is manufactured from C49 high carbon steel, designed for superior performance and durability in off-road applications.
All features
| Model Part Number | JTR251.47 |
|---|---|
| Brand | JT |
Extended Product Information
FAQs
What material is the JT Steel Sprocket made from?
The JT Steel Sprocket is manufactured using C49 high carbon steel, known for its strength and durability.
What Yamaha models is this sprocket compatible with?
This rear sprocket (JTR251.47) is designed for the Yamaha YZ125 model years 1999-2021.
How does steel compare to aluminum for sprockets?
Steel sprockets are generally more durable and offer a longer lifespan than aluminum sprockets, but they are also heavier.
What does '47T' mean?
'47T' refers to the number of teeth on the sprocket, which is 47 in this case. This tooth count influences the motorcycle's gearing ratio.
Is this sprocket a direct replacement for the stock sprocket?
Yes, it is designed as a direct replacement for the stock rear sprocket on compatible Yamaha YZ125 models.
How should I maintain this steel sprocket?
Regular cleaning with a degreaser and consistent lubrication with a quality chain lube are essential for maximizing its lifespan and performance.
Will this sprocket affect my bike's acceleration or top speed?
The 47-tooth count provides a specific gearing ratio. Changing the tooth count will alter acceleration and top speed; this 47T is designed for a balance suitable for the YZ125.
Troubleshooting
Sprocket appears loose after installation
Verify that all sprocket mounting bolts are tightened to the manufacturer's specified torque. Ensure the sprocket is properly seated against the hub.
Chain skipping on the sprocket teeth
Check for excessive wear on both the sprocket teeth and the chain. Inspect the chain tension; it may be too loose. Clean and lubricate the chain and sprocket.
Unusual noise during operation
Inspect for proper chain alignment and tension. Ensure no debris is caught between the sprocket and other components. Check if the sprocket is securely fastened to the hub.
Premature wear on sprocket teeth
Ensure the chain is properly lubricated and clean. Check for any misalignment in the drivetrain or damaged chain rollers. Abrasive dirt and lack of lubrication accelerate wear.
Pros and Cons
Pros
- Exceptional durability and long service life due to high-carbon steel.
- Reliable performance with precise tooth profiling for smooth chain interaction.
- Cost-effective solution for replacing worn stock sprockets.
- Resistant to wear and tear from off-road riding conditions.
- Maintains consistent performance over time.
Cons
- Heavier than aluminum sprockets, potentially impacting overall bike weight.
- May require more frequent chain adjustment compared to some lighter materials.
- Not designed for extreme weight reduction tuning.
- The black finish can eventually show wear marks after extensive use.
Setup, Compatibility & Care
Compatibility: This JT Steel Sprocket is specifically designed for the Yamaha YZ125 model years 1999 through 2021. Ensure your motorcycle falls within this range for proper fitment. Always consult your motorcycle's service manual for exact specifications regarding sprocket installation.
Setup: Installation should be performed by a qualified mechanic or an individual familiar with motorcycle drivetrain maintenance. Ensure the sprocket is correctly aligned with the chain and the rear wheel hub. Proper torque specifications for the sprocket nuts must be followed as per the Yamaha YZ125 service manual.
Care: Regularly clean the sprocket and chain with a suitable degreaser and lubricate with a quality chain lubricant. Inspect the sprocket teeth for excessive wear or damage before each ride. A clean and lubricated drivetrain will maximize the lifespan of the sprocket and other components.