Faster than expected delivery. Genuine RFN part. Overall happy with product.
nice, fast, and as expected 👌.
I have ordered from this company / shop for 4 months and I have never had a problem, honestly great experience 😎
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KMC
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The KMC Kool Super Lite (K1SL) Chain is a lightweight, high-strength single-speed chain designed for electric balance bikes and small e-bike drivetrains, where efficiency and durability matter.
Built with KMC’s Super Lite (SL) construction, this chain reduces rotating mass to help improve throttle response and overall drivetrain efficiency. The open plate design sheds mud and debris easily, making it ideal for kids riding in dirt, dust, and track conditions.
Finished with KMC’s stretch-resistant treatment and Dynamic K configuration, the K1SL delivers consistent performance and long service life—even under the higher loads common with electric drivetrains.
A solid upgrade when swapping sprockets, building a race setup, or replacing a worn stock chain on an electric balance bike. If you’re changing gearing, this chain pairs perfectly with our sprocket upgrades.

Looks great. Plenty of chain for the sprocket upgrade. Perfect father and son project for my 4 year old.
Good chain also looks good !!
Awesome chain, seems a little more heavy duty than the stock one. Been on about a month now and it’s worked great.
It’s for sure shiny and it will stick on on the Stacyc. Trying to add some color to it.
I got this for the stacyc 16e and it was awesome how much chain came with it. Was unsure if it came with a master link but it did. High quality nice chain happy with the purchase.
I got this for the stacyc 16e and it was awesome how much chain came with it. Was unsure if it came with a master link but it did. High quality nice chain happy with the purchase.
Faster than expected delivery. Genuine RFN part. Overall happy with product.
nice, fast, and as expected 👌.
I have ordered from this company / shop for 4 months and I have never had a problem, honestly great experience 😎