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Product details
Sun ChaserPart
A replacement fat-bike inner tube for compatible 20 x 4 or 26 x 4 eBike tyre setups.
Fitment can depend on model year, connector, brake caliper, tyre size, rack mounts or controller setup. If you are unsure, contact Sun Chaser before checkout and we will help check the right part.
How do I know which size I need?
Check the tyre size printed on the sidewall of your current tyre.
Does this include a tyre?
No. This is the inner tube only unless the product options state otherwise.
Can Sun Chaser fit it?
Yes, we can help with tube replacement and tyre fitting by appointment.
Confirm before publishing
Draft fitment: 20x4 or 26x4 fat tyres
20x4 fat-tyre bikes - confirm valve and tyre size
26x4 fat-tyre bikes - confirm valve and tyre size
Sun Chaser support
Clear advice, local support, test rides and parts help should sit beside every product decision.
Ask about fit, carrying needs, compliance, accessories and real-world use before choosing.
Compare comfort, handling, access and ride feel before you commit.
Local support for servicing, replacement parts and compatibility questions.
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