SRAM Rear Derailleur Pulley Kit - X4 / SX4
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Product Information
Full details
This SRAM Jockey Wheel Set is designed for riders with SRAM X4/SX4 rear derailleurs seeking to restore or enhance their shifting performance. The key benefit is smoother, more reliable gear changes through precision-made, durable pulley wheels. A caveat is that this kit is specifically for X4/SX4 models and may not be compatible with other derailleur systems. This kit provides a direct replacement for your existing pulley wheels, ensuring optimal drivetrain function.
All features
| Brand | SRAM |
|---|
Extended Product Information
FAQs
Are these pulleys suitable for all SRAM rear derailleurs?
No, this specific kit is designed only for SRAM X4 and SX4 rear derailleurs. Compatibility with other models is not guaranteed.
Do I need special tools to install these pulleys?
Typically, a standard Allen wrench (hex key) is required to remove and install the pulley bolts. Derailleur adjustment may require additional tools like cable cutters and pliers.
How often should I replace my jockey wheels?
Jockey wheels should be replaced when they show significant wear on the teeth or if they develop excessive play or resistance. This can vary based on riding conditions and mileage, but inspecting them every few months is recommended.
Can I use these pulleys with a non-SRAM chain or cassette?
While they are designed for SRAM systems, they often function with compatible chains and cassettes from other brands. However, optimal performance is best achieved with a complete SRAM drivetrain.
What is the difference between the upper and lower pulley wheels?
The upper pulley wheel (closer to the cassette) is typically the 'guide' pulley, and the lower pulley wheel is the 'tension' pulley. They are often marked and designed differently to manage chain slack and guide the chain onto the cassette.
Will this kit improve my shifting if my derailleur is bent?
No, this kit replaces worn pulley wheels. If the derailleur cage itself is bent or damaged, pulley wheel replacement alone will not fix severe shifting issues.
Troubleshooting
Shifting is still imprecise after installation.
Re-check derailleur cable tension and limit screw adjustments. Ensure the pulley wheels are installed in the correct orientation (upper vs. lower).
Chain skips or falls off.
Verify that the pulley wheels are compatible with your specific derailleur model and that they are installed correctly. Check for any debris lodged in the derailleur cage.
Pulley wheels feel stiff or noisy.
Ensure the mounting bolts are not overtightened. Clean any accumulated dirt from the teeth and bearings. If noise persists, the pulleys may have a manufacturing defect.
Pros and Cons
Pros
- Improves shifting smoothness and precision.
- Designed for long-lasting durability.
- Easy installation as a direct replacement.
- Maintains and enhances original derailleur performance.
- Affordable solution for drivetrain maintenance.
Cons
- Limited compatibility; only fits specific X4/SX4 models.
- Does not include any other derailleur components.
- May require minor adjustments after installation for optimal performance.
Setup, Compatibility & Care
Compatibility: This pulley kit is specifically designed as a direct replacement for SRAM X4 and SX4 rear derailleurs. Ensure your derailleur model matches precisely before purchase.
Setup:
- Remove the old pulley wheels from your rear derailleur.
- Clean the derailleur cage area.
- Install the new upper and lower pulley wheels, ensuring they are oriented correctly (often marked 'B' for the jockey wheel closest to the cassette and 'A' for the one further away, or indicated by a directional arrow on the wheel itself).
- Tighten the mounting bolts securely but do not overtighten.
- Adjust your derailleur indexing according to SRAM's recommended procedure for your specific derailleur model.
Care: Regularly clean the pulley wheels with a dry cloth or brush to remove dirt and debris. Lubrication is generally not recommended for pulley wheels as it can attract dirt. Inspect for wear and tear, and replace if teeth are excessively worn or if the wheels spin with significant resistance.