KMC MissingLink 7/8R EPT - Silver
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Product Information
Full details
This KMC MissingLink 7/8R EPT is a reusable chain connector designed for cyclists maintaining 7 and 8-speed bicycle chains. Its key benefit is the ease and speed of chain repair or connection without specialized tools, though users must ensure compatibility with their specific chain type due to pin variations. This guide covers its features, use, and maintenance.
All features
| Model Part Number | 4715575895611 |
|---|---|
| Brand | KMC |
Extended Product Information
FAQs
Can I reuse the KMC MissingLink 7/8R EPT?
Yes, this MissingLink is designed to be reusable multiple times. However, repeated installation and removal can eventually lead to slight wear, so it's recommended to replace it if it feels loose or starts causing shifting issues.
How do I know which pin size (7.1mm or 7.3mm) to get?
You must check the specifications for your specific bicycle chain. The 7.1mm pin is for certain KMC and SRAM chains, while the 7.3mm pin is for other KMC chains and specific Shimano chains. Consult your chain's manual or the manufacturer's website.
Do I need special tools to install the MissingLink?
No, the KMC MissingLink 7/8R EPT is designed for tool-free installation and removal. It can typically be installed and removed by hand, although a slight flex of the chain or a gentle assist might sometimes be needed.
What happens if I use the wrong pin size?
Using the incorrect pin size can lead to improper chain function, poor shifting performance, premature wear on your chain and drivetrain components, or the chain potentially coming apart.
How often should I clean my chain and MissingLink?
The frequency depends on your riding conditions. For regular use, cleaning and lubricating your chain every 100-200 miles or after riding in wet or dirty conditions is recommended. Ensure the MissingLink is cleaned along with the chain.
Is the EPT coating important?
Yes, the EPT (EcoProTeQ) coating provides enhanced protection against corrosion and rust, significantly increasing the lifespan and durability of the connector, especially in challenging environmental conditions.
Can this be used on e-bike chains?
This specific model is designed for standard 7 and 8-speed chains. While some e-bikes use these chain types, always verify if the e-bike manufacturer specifies compatible chain connectors, as some high-torque e-bike systems may require specialized components.
Troubleshooting
MissingLink is difficult to engage or disengage initially.
This is common due to the tight tolerances. Apply a small amount of chain lubricant. Try flexing the chain slightly or use a chain tool to gently assist engagement/disengagement. Repeated use will loosen it.
Chain feels rough or is noisy after installing MissingLink.
Verify that the correct pin size was used for your chain. Ensure the MissingLink is fully seated and aligned correctly. Check for any debris or damage on the chain or connector.
MissingLink comes loose during riding.
Ensure the MissingLink was properly seated by applying firm pressure to the pedals after installation. Check for any signs of wear or damage on the MissingLink or chain ends that might prevent a secure connection. Replace if damaged.
Difficulty installing MissingLink by hand.
Ensure the chain ends are properly aligned. Sometimes, lifting the rear wheel off the ground and pedaling backward can help align the plates. If still difficult, a slight flex of the chain or a gentle nudge with a tool might assist, but avoid forcing it.
Pros and Cons
Pros
- Enables quick chain repairs without specialized chain tools.
- Reusable, offering cost savings over single-use connectors.
- EPT coating provides superior rust and corrosion resistance.
- Simplifies chain removal for cleaning and maintenance.
- Durable construction for reliable performance.
Cons
- Requires careful verification of pin size for specific chain compatibility.
- May require significant force to disengage for the first few uses.
- Not suitable for chains outside of 7 or 8-speed specifications.
- Can be easily lost if not stored properly when removed from the chain.
Setup, Compatibility & Care Instructions
Setup:
- Ensure your bicycle chain is a 7 or 8-speed type with a 1/2 x 3/32 inch pitch.
- Identify the correct pin size (7.1mm or 7.3mm) required for your specific chain model.
- Align the two ends of the chain that the MissingLink will connect.
- Insert the two halves of the MissingLink into the open ends of the chain.
- Push the two halves together, ensuring the pins fully engage within their respective slots.
- With the chain taut, firmly press down on the pedals to seat the MissingLink securely. You should feel a distinct click.
Compatibility:
- Chain Speeds: 7-Speed, 8-Speed
- Chain Size: 1/2 x 3/32 inch
- Pin Sizes:
- 7.1mm: KMC X8/X8 EPT/Z7/Z6 and SRAM 7/8 speed chains.
- 7.3mm: KMC X8/X EPT/Z7/Z6 and Shimano UG51 + HG40/50/70/90 chains.
- Important: Always double-check your chain manufacturer's specifications before purchasing to ensure the correct pin size is selected. Using the wrong size may lead to poor performance or damage.
Care:
- Clean the MissingLink with a degreaser and brush periodically along with your chain.
- Rinse and dry thoroughly after cleaning.
- Apply a suitable chain lubricant after cleaning and drying.
- Avoid using abrasive cleaners or high-pressure water jets directly on the connector.
- Store in a clean, dry place when not in use.