Sun Race E-Bike Chain - 12 Speed - 138L
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Merlin CyclesSunrace Silver E-Bike Chain - 12 Speed - / 12 Speed / 138L
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Product Information
Full details
The Sun Race CN12E 12-Speed Chain is designed for e-bike enthusiasts who require high-performance durability to withstand the increased torque produced by electric drive systems. This chain features specialized construction to ensure smooth shifting and longevity under heavy loads, though users should ensure their current drivetrain is compatible with 12-speed 138-link specifications before installation.
All features
| Model Part Number | CN12E-BOX |
|---|---|
| Brand | Sun Race |
Extended Product Information
FAQs
Is this chain compatible with all 12-speed systems?
The CN12E is designed for 12-speed e-bike systems; however, always verify compatibility with your specific cassette and derailleur brand manufacturer.
Do I need to shorten the 138-link chain?
Most installations will require you to remove excess links to fit your specific bike's chainstay length and gear ratio.
Can I use a standard chain tool to install this?
Yes, a standard 12-speed compatible chain tool is sufficient for sizing and installation.
How often should I lubricate the chain?
Lubrication frequency depends on riding conditions, but it is recommended to apply lube every 100-150 miles or after riding in wet/dusty conditions.
Does the Teflon coating wear off?
Like any finish, the Teflon coating will gradually wear down over time, but it provides a protective advantage during the chain's functional lifespan.
Troubleshooting
Chain skipping after installation
Verify the chain is routed correctly through the derailleur cage and ensure the derailleur hanger is aligned.
Excessive noise during riding
Check for proper lubrication and ensure the chain is not rubbing against the front derailleur or chain guide.
Difficulty shifting between gears
Adjust the barrel adjuster on your shifter to fine-tune the cable tension for the 12-speed indexing.
Pros and Cons
Pros
- Specifically built to handle high e-bike motor torque
- Chromized pins offer extended chain lifespan
- Teflon-coated plates reduce friction and drivetrain noise
- Ample 138-link length for most e-bike setups
Cons
- Requires 12-speed specific components for correct operation
- Longer length may require precise shortening for some builds
- Higher maintenance requirements compared to non-e-bike chains
Setup, Compatibility & Care
Installation requires a standard chain breaker tool to size the chain to your specific frame. Ensure the derailleur is tuned for 12-speed indexing following the installation. For care, avoid using harsh solvent-based degreasers that can degrade the Teflon coating. Instead, use a damp cloth and mild soap or a dedicated e-bike chain cleaner, followed by a light application of dry or wet lube depending on your riding environment. Regularly check the chain for "stretch" using a chain wear indicator tool to prevent premature wear on your cassette and chainring.