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20X4.0in All-Terrain Fat Tires
7-Speed Shimano Gear
60 NM Torque 250W Brushless Motor
100km Pedal Assist Mode
25km/h Cut-off Speed
Durable Suspension with a Lockout
Disc Brake & E-Brake
Easy Folding

Mighty Motor, Mighty Explorer

Explore the great outdoors with a robust brushless motor.

Cut-off Speed

Enduring Power, Enduring Rides

Explore more of the world with the removable 748.8Wh battery that supports up to 100km per charge in assist mode.

Removable Battery

Smart LCD Control

Real-Time Speed
Assist Level
Battery Level
Walk Mode

More Features

Folding Pedal

Luggage Rack

Cozy Foam Saddle

Sturdy Mudguard

A Total Length 66.9"
B Handlebar Height 46.5"-52"
C Wheelbase 43.9"
D Min. Seat Height 32.5"
E Max. Seat Height 41.7"
F Standover Height 28.3"
G Effective Top Tube 23.1"
H Wheel Size 20"
I Handlebar Length 23.6"
J Seat Tube 17"
M Reach 17.6"
N Stack 19.6"
O Head Tube Angle 72.1°


Basic Specification

Net Weight: 30kg
Unfolded Size: 1700x600x1320mm
Size of Frame: 20"x17"
Length of Handlebar: 600mm (23.6")
Height of Saddle (From the Ground): 32.5"-41.7"
Recommended Rider Height: 160-200cm (Around 5' 3"-6' 7")
Max Load of Bike: 120kg
Cut-off Speed: 25km/h
Max Range: 100km (Assist Mode)
Pedal Assist Levels: 12/15/18/21/25 km/h
Walk Mode: 6km/h
Waterproof Level: IPX4
Material of Frame: Aluminium Alloy (AL6061)
Braking System: Disc Brakes & E-Brake
Suspension: Mechanical Shock Absorber with a Lockout
Suspension Travel: 50mm


Type: Hub Motor
Rated Voltage: 48V
Max Output Torque: 60N.M


Brand: Shimano
Number of Gears: 7 (Rear)


Capacity: 15.6Ah
Voltage: 48V
Charging Time: 6-8h
Power Capacity: 748.8Wh
Protection System: Yes


Input: 100-240V, 2.0A
Output: 54.6V, 2.0A


Size: 20x4"
Type: Pneumatic Rubber Tires
Tire Pressure: 5~30PSI 
Best Tire Pressure: 15~17.5PSI


Type: LCD
Information: Real-Time Speed, Assist Level, Battery Level
Functions: Power On/Off, Turning Light On/Off, Shifting Assist Levels, Activating Walk Mode, etc.


Size: 1400x290x745mm
Gross Weight: 38kg

  • Bike

  • User Manual

  • Charger

  • Pedals

  • Keys

  • Taillight

  • Headlight

  • LCD Display

  • Tool Kit

  • Mudguards

  • Spoke Reflectors

  • Saddle

  • Rear Reflector

  • Rear Rack with Taillight


Please read our FAQs page to find out more.

Can it be folded?

Yes. The Touroll S1 fat bike can be folded easily.

Is the battery removable?

Yes. The battery is removable and can be charged on or off the bike. You can lock it on your bike with the key for high security.

Can I purchase an extra battery?

Yes, you can buy an extra battery from our official website or our official distributors.

Does the e-bike come with a charger?


How do I recharge the battery pack?

The battery pack can be charged on or off the bike by plugging in the charger unit. The charger unit connects to a standard wall outlet. The charging time is around 6-8 hours.

Does the e-bike come with a display?

The Touroll S1 comes with an LCD display that shows the real-time speed, battery level and assist level.

What braking system does it use?

The S1 uses an advanced braking system consisting of an e-brake and dual disc brakes for enhanced safety.

What kind of assembly is required?

Your e-bike will arrive partially assembled (about 85%) and packaged in a standard bike box. The parts that need to be mounted include the handlebar, front wheel, front mudguard, headlight, saddle, rear reflector and pedals. You can check the manual for a step-by-step guide.

What is the maximum rider weight?

The maximum recommended rider weight is around 120kg for optimal performance.

What is the size of the frame?

The S1 fat bike has a frame size of 20"x17".

 I’m 5'8". Can I use this bike?

Yes. The recommended rider height is 160-200cm (approx. 5' 3"-6' 7").

Can I ride this bike off-road?

Yes. The S1 features 4-inch wide tires that can ride on all terrain. These knobby pneumatic tires provide great traction and shock absorption for a smoother ride over diverse terrain.

Can I ride this bike on a rainy day?

All of the electric components, including the battery pack, are designed to be water-resistant. However, we strongly recommend keeping it indoors on rainy days or in bad weather.

Where is the bike shipped from? And how many days can I get the bike after I place the order?

Our bikes are shipped from warehouses in Europe. It usually takes around 3-7 working days for shipment.

What if there are any issues with the bike?

Touroll has a professional after-sales service team and a dedicated technical support team. We spare your worries about maintenance with our local services in Europe. For all warranty inquiries, head to our official website for more details.

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