SunRace Rear Derailleur Extender Link - SP570
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Product Information
Full details
This guide is for cyclists using wide-ratio cassettes and seeking to optimize their rear derailleur performance. The SunRace SP570 extender link provides the extra clearance needed for larger cassettes, allowing for smoother shifting. Note that this extender link is specifically designed for use with SunRace derailleurs.
All features
| Model Part Number | SP570 |
|---|---|
| Brand | SunRace |
Extended Product Information
FAQs
What is the purpose of the SunRace SP570?
The SP570 extender link is designed to provide extra clearance for rear derailleurs when using wide-ratio cassettes, enabling smoother shifting.
Which derailleurs are compatible with the SP570?
The SP570 is designed for use with SunRace rear derailleurs.
What type of cassettes is this extender link designed for?
It is designed for use with ultra-wide ratio cassettes, typically those with a 42-tooth or larger cog.
How do I install the SP570?
Remove the existing derailleur hanger bolt, install the SP570 in its place, and reattach the rear derailleur. Then, adjust the B-tension screw and limit screws for optimal shifting.
What tools are needed for installation?
You will likely need a hex wrench and potentially a screwdriver to adjust your derailleur.
How do I adjust the B-tension?
The B-tension screw is typically located on the rear derailleur. Turn it to adjust the distance between the upper pulley wheel and the cassette cogs. Adjust until shifting is smooth.
How do I care for the SP570?
Clean the extender link regularly with a clean cloth. Inspect it periodically for wear and tear.
Troubleshooting
Poor shifting performance after installation.
Re-adjust the derailleur's B-tension screw and limit screws to ensure proper chain clearance and alignment with the cassette cogs. Check the cable tension as well.
Derailleur does not reach the largest cog.
Adjust the B-tension screw to increase the gap between the derailleur and the cassette. Make sure the extender link is correctly installed.
Chain rubs against the cassette.
Fine-tune the derailleur's limit screws to ensure proper alignment and prevent the chain from rubbing against the cassette.
Pros and Cons
Pros
- Increases compatibility with wide-range cassettes.
- Improves shifting performance with larger cogs.
- Durable 7075 Alloy construction.
- Corrosion-resistant black anodized finish.
Cons
- Only compatible with SunRace rear derailleurs.
- Requires proper installation and adjustment.
- May not be necessary for all cassette setups.
- Adds a small amount of weight to the system.
Setup, Compatibility & Care
Setup
- Compatibility Check: Ensure that your rear derailleur is a SunRace model and that your cassette is of a wide-ratio type (42T or greater).
- Removal: Remove the existing derailleur hanger bolt.
- Installation: Install the SP570 extender link in place of the existing bolt.
- Derailleur Mounting: Re-attach the rear derailleur to the SP570 extender link.
- Adjustment: Adjust your rear derailleur to ensure smooth shifting across all gears. This may involve adjusting the B-tension screw.
Compatibility
- The SP570 is compatible with SunRace rear derailleurs.
- Designed for use with wide-ratio cassettes (42T+).
Care
- Clean the extender link regularly with a clean cloth to remove dirt and debris.
- Check for any signs of damage or wear before each ride.
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