Smart simplicity, built in.
Most kids’ bikes make them think about shifting gears. Belter Auto does it for them - automatically, at exactly the right moment.
Tuned through real-world testing, each hub is matched to wheel size so the gear change happens naturally and predictably - no stalling, no spinning out, just smooth, confident riding.
THE PERFECT PAIRING
Automatic gearing meets the belt drive.
We don’t use a chain. We use a belt — reinforced and engineered with a precision tooth pitch that keeps every pedal stroke smooth and silent.
No oil. No grease. No mess. Just a cleaner, easier ride that lasts.
Combined with the Auto hub, it delivers seamless power transfer and zero maintenance — the cleanest, quietest, most durable drive system ever fitted to a kids’ bike.
ENGINEERED FOR CONFIDENCE
Performance that grows with them.
The 16” Auto uses a high-range hub that shifts around 11 kph — just as young riders find their rhythm.
The 20” Auto shifts earlier, around 10.5 kph, keeping cadence smooth for older kids ready to ride faster, farther, and more independently.
Every detail is tuned to build confidence — one smooth shift at a time.
MADE TO LAST
Built once. Ridden for years.
Crafted from lightweight, fully recyclable aluminum with high-grade components, our Belter Auto bikes are designed to last — and to be passed on.
Their timeless, gender-neutral colors and belt-driven reliability mean each one can live a second, third, and fourth life with new riders.
THE OPTIMAL RATIO
We're obsessed with the details that make riding intuitive and fun—especially when it comes to shifting gears. That's why we meticulously tested and fine-tuned our custom built Sturmey-Archer automatic hub. By experimenting with different gear ratios, we discovered the perfect shift point: 11 kph. This setting ensures the bike changes gears smoothly at the optimum moment for the rider's size and speed. The result? Your child can forget about complicated gears and just focus on the joy of the ride.
Choose your model.
Two sizes. One philosophy: effortless riding.
Every Belter Auto delivers the same smooth, automatic experience — scaled perfectly for your child’s size and confidence.
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