ESJOT Sprocket - 727.17.41
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Product Information
Full details
The ESJOT 39-tooth rear sprocket (model 727.17.41) is a high-performance drivetrain component designed for motorcycle enthusiasts and mechanics seeking reliable power transfer and enhanced durability. Built from rugged, high-strength steel, this sprocket is engineered to endure demanding riding conditions while maintaining precise gear engagement. While it offers excellent wear resistance, riders should note that this specific 525-pitch component requires a matching chain pitch to function correctly, making it a specialized upgrade rather than a universal fitment part.
All features
| Model Part Number | 727.17.41 |
|---|---|
| Brand | ESJOT |
Extended Product Information
FAQs
Does this sprocket come with mounting bolts?
No, the package includes the sprocket only. It is recommended to use the original manufacturer bolts or new high-tensile hardware.
Can I use this with a 520 or 530 chain?
No, this sprocket is specifically designed for a 525 pitch chain. Mixing different chain and sprocket pitches will result in severe damage.
Is this sprocket suitable for racing applications?
While durable, this is primarily designed for street and touring. Racing applications may require specialized lightweight materials.
How often should I replace this sprocket?
Replace it when you notice the teeth starting to curve or 'hook', or when performing a full chain and sprocket kit replacement (usually every 15,000–20,000 miles depending on maintenance).
What is the primary material used?
The sprocket is constructed from high-quality hardened steel for maximum wear resistance.
Troubleshooting
Excessive noise from the rear drivetrain
Check chain tension; a chain that is too tight or misaligned will create significant noise against the sprocket teeth.
Visible wear or hooking on the sprocket teeth
Replace both the sprocket and the chain simultaneously to ensure even wear and prevent premature damage to the new component.
Difficulty installing on the rear hub
Verify that the hub is free of corrosion and that the bolt pattern (152 mm) and center bore (132 mm) perfectly align with the sprocket specifications.
Pros and Cons
Pros
- Exceptional durability due to high-strength steel build
- Precise tolerances ensure smooth power delivery
- Excellent resistance to wear under normal operating conditions
- Standardized dimensions simplify compatibility checks
Cons
- Requires specific 525-pitch chain compatibility
- Steel construction adds more unsprung weight than aluminum equivalents
- Not intended for non-standard or custom hub configurations
Setup, Compatibility & Care
Before installation, verify that your motorcycle's rear hub matches the 132 mm internal diameter and 152 mm bolt pattern requirements. Always use a torque wrench to tighten the sprocket mounting bolts to the manufacturer-specified torque settings to prevent shearing or hub damage.
Care instructions include:
- Periodically inspect the sprocket teeth for 'hooking' or uneven wear patterns.
- Maintain proper chain tension to prevent unnecessary stress on both the sprocket and the wheel bearings.
- Keep the drivetrain clean of road grit and debris to prolong the life of both the sprocket and your chain.
- Regularly apply high-quality chain lubricant to reduce friction between the rollers and the sprocket teeth.