









ROCKBROS DARWIN II 16"/20" Belt-Drive Kid's Bike
🎁 Buy 2+ Bike Bags, Get 15% Off Each
Built for young adventurers aged 5–9, this 16"/20" kids bike combines aerospace-grade aluminum construction with a quiet, low-maintenance belt-drive system. Lightweight yet durable, it features a low-step frame for easy mounting and adjustable seat height to grow with your child. The integrated steering limiter, non-slip silicone grips, and responsive V-brakes ensure a safe and stable ride on any surface. With puncture-resistant INNOVA tires and a corrosion-resistant metallic finish, this bike is ready for daily play and long-term exploration.
Category | 16" Version | 20" Version |
---|---|---|
Recommended Age | 5–9 years old | 6–12 years old |
Frame, Fork, Handlebar, Seatpost, Wheels | Aluminum alloy | Aluminum alloy |
Tire | INNOVA 16×1.5 | INNOVA 20×1.75 |
Transmission | Belt-Drive System | Belt-Drive System |
Brake | V-Brake | V-Brake |
Saddle | ROCKBROS Kids Saddle | ROCKBROS Kids Saddle |
Weight Limit | Up to 45 kg | Up to 55 kg |
Special Features | Steering limiter, non-slip grips, corrosion-resistant finish | Same as 16" version |
Shipping Fees:
We provide clear and detailed shipping fees based on the order amount and shipping method:
- Standard Shipping:
- Order Amount Below $29: Shipping Fee - $4.99
- Delivery Time: 3-4 business days
- Free Shipping:
- Order Amount $29 and over: Free 📦
Shipping Info
- US Warehouse In-stock: 3–4 business days
- 🌍International Shipping (if US out of stock): 7–10 business days
- 🚲Bicycles: 20–25 business days
Please note that we do not charge any additional taxes.
Enjoy worry-free shopping with our 30-day return policy. We cover return shipping for any defective or incorrect products
At ROCKBROS, we offer a worry-free 1-year warranty to ensure your satisfaction. Whether it's a defect or product issue, simply reach out to us at service@rockbrosbike.us with your order details. We'll handle the rest to make sure your experience is smooth and hassle-free.