Robin SU4 Fat Tire E-bike
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Estimated delivery:Feb 15 - Feb 19
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Extra €100 off for 2 Bikes: CB100
Motor 250W Bafang powerful motor, max 80N.m
Max speed 25km/h.
48V13Ah Lithium Battery
≥65km Measured range
Shimano 7 speed.
Free shipping on all orders.
Our Customer Experience team is here to answer all of your questions.
Hours: 6PM - 3AM PST from Mon - Fri
Email:service@crazybirdbike.com
Different types to meet different needs
Robin SU4 Fat Tire E-bike
Embrace speed and freedom, and move forward without limit!
Want a convenient way to get around the city? The Crazybird CB10 Folding Electric Bike is your answer.
No more crowded buses and expensive taxis, enjoy the convenience and freedom of riding a CB10, whether you're commuting to get off work or exploring the great outdoors.

Ride farther and faster
Embrace speed and freedom, pursue growth!

Suitable for women and beginners
The Step-Thru electric bike frame usually has a very low top tube height of 480 mm, which is an ideal electric bike for women, beginners, people with bad knees and older people. (It is also friendly to women in e-bike skirts).

Start your all-terrain adventure
Electric bikes with wide tires are great for off-roading. Thick tires can improve riding control and balance, and the Robin SU4 uses CST/Kenda 26"X4.0 run-flat tires with wide rims, which greatly improves durability.
Technical Specifications
MODEL | Robin SU4 | ||
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MOTOR | 48V 250W Bafang Max.80N.m | FRAME | 6061 Aluminum |
DISPLAY | Color LCD with USB port | HANDLEBAR | Aluminum alloy 720mm |
CHARGER | AC110-240V DC48V2.0 | KICKSTAND | Single-leg aluminum alloy |
TIRES | CST/Kenda 26"x 4.0" | RANGE | ≥65Km Range(Measured) |
PEDAL ASSISTANCE | Intelligent 5 level pedal assist | DERAILLEUR | Shimano 7 speed |
WEIGHT (WITH BATTERY) |
44kg |
CONTROLLER | 48V250W |
WEIGHT LIMIT | 120kg | SEAT POST | Aluminum alloy Φ31.8×350mm |
RECOMMENDED HEIGHT | Above 165cm | PEDALS | Wellgo mountain type |
CRANK | Aluminium alloy 42T | TYPE | All Terrains Electric Fatbike |
Size

Shipping and Return
Shipping policy
Our goal is to offer you the best shipping options, no matter where you live.The total time is the sum of the processing time and the shipping time.
Processing time: the time between when you place an order and when we ship it.
Shipping time: the time between when your order has been shipped and delivered to you.
Shipping carrier: Dachser/DPD/Fedex
Shipping time: Due to high order volumes, shipment handling time may take 2-3 days, Business days refer to Monday~Friday(excluded holidays and weekends). another 5-7 days for the order to arrive at your door.
Shipping fee: Free shipping whole store
Shipping from: EU Local warehouses
Shipping area: the EU only. Any other question, please contact us at service@crazybirdbike.com
Return
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.
Instruction: To start a return, you can contact us at service@crazybirdbike.com. If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. crazybirdbike is not responsible for the shipping cost of the package returned by the customers themselves.
Restocking Fee: you are subject to €200 per bike restocking fee.
Return Shipping Costs: You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. We recommend using a trackable shipping service and purchasing shipping. We cannot guarantee that we will receive the item you are attempting to return.
Returns are not allowed after 14 days of the delivery date: To be eligible for a return, your item must be in the same condition that you received it, unworn, unused or the ebike must have less than ten (10) miles on the odometer, it and must include all items that were inside the box (charger, keys, hardware, etc.), and in its original packaging. You’ll also need the receipt or proof of purchase.
Damages and issues: Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Return Address: Contact us to get detailed return address
You can always contact us for any return question at service@crazybirdbike.com
NON-RETURNABLE ITEMS INCLUDE, BUT ARE NOT LIMITED TO:
1. Product from Unauthorized Reseller
2. The damage is caused by human
3. Special order
4. sale items or gift cards
Exchange for new model(Only for Non-quality Products)
This term is only for the unworn, and the ebike must have less than ten (10) miles on the odometer.