Fastron SO Fat Tire Ebike

$400.00 OFF

UL 2849 / UL 2271

Studio side view of Fastron SO fat tire electric bike with green rims and step-over frame

Close-up of rider pedaling Fastron SO e-bike with fat tires and rugged motor hub

Front-angle studio shot of Fastron SO electric mountain bike with fat tires

Side-by-side studio view of two Fastron SO fat tire ebikes with step-over frames

Right-side view of Fastron SO ebike with suspension fork and green-accented fat tires

Two Fastron SO ebikes parked in front of modern city buildings, urban riding scene

City riding shot of Fastron SO electric bikes parked near skyscrapers

Fastron SO ebike pair in outdoor setting, showing battery and wide tire details

Green-rimmed Fastron SO fat tire ebike with upright geometry, angled view

Front-left studio angle of Fastron SO ebike showing treaded fat tires

Tan version of Fastron SO fat tire electric bike parked on urban walkway

Rider cruising tan Fastron SO fat tire ebike in downtown area with high-rises behind

Urban photo of two Fastron SO ebikes parked in plaza, showcasing motor and rear rack

Studio side-by-side view of black and tan Fastron SO electric bikes with fat tires

720 Wh

Battery

Up to 60 Miles

Range

750 W

Motor

28 MPH

Top Speed

8 Speed

Gearing

26*4.0 "

Tires

Cadence Sensor

Sensor

Canbus

System

$2,199.00 $1,799.00

Conquer all terrains with fat tires, a powerful motor, and a durable step-over frame.

Ship within 2-3 business days

Color — Matt Black

Dark Coffee

Avocado Green

Matt Black

Champ.gold

Quantity

2-Year Warranty

14-Day Returns

Free Shipping

720 Wh

Battery

Up to 60 Miles

Range

750 W

Motor

28 MPH

Top Speed

8 Speed

Gearing

26*4.0 "

Tires

Cadence Sensor

Sensor

Canbus

System

Questions? Email us at info@leoguarbikes.com

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Built for Safety, Comfort, and Off-Road Riding

Glide with Fastron SO Ebike

Enjoy smooth, quiet rides with our 750W rear hub motor and whisper-silent drivetrain. The 48V 15Ah battery gives you up to 60 miles of assisted range, while the half-twist throttle and 5 pedal assist levels make every hill effortless. Ideal for city or trail riding with confidence and ease.

Conquer Every Wild Terrain

Tackle sand, snow, and trails with our 26"x4.0" fat tires and 3.14" front suspension. The Tektro hydraulic disc brakes deliver safe stopping in all weather. Built tough for off-road adventures, this ebike gives you control, grip, and stability on every ride.

Comfort in Every Ride

From adjustable leather saddle to ergonomic alloy handlebars, every detail puts comfort first. The sturdy step-over frame supports up to 300 lbs, fitting riders 5'3" to 6'5". Whether commuting or exploring, this ebike ensures a smooth and upright ride you’ll love.

Smart Display, Simple Control

The full-color LCD display with CANbus technology keeps you updated on speed, battery level, and pedal assist mode—all clearly visible even under direct sunlight. Easily switch between 5 assist levels, charge your devices via the built-in USB port, and ride confidently in any weather thanks to its IP65 waterproof rating.

Features

Secure Dual-Lock 48V Battery

Our 48V lithium battery is protected by a patented dual-lock system to prevent theft or accidental drops. A single key releases the pack for easy charging. Whether you're navigating city streets or venturing off-road, the battery stays locked in and worry-free.

Smart LCD Display with Security Features

Equipped with a 2.0" waterproof TFT screen, this console offers clear visibility in any light. The built-in anti-theft password and CANbus System provide security, error alerts, and easier maintenance, while pedal assist levels and USB charging keep rides smooth and connected—rain or shine.

750W Rear Hub Motor + Shimano 8-Speed

Powered by a robust 750W rear hub motor and a Shimano 8-speed gear system (12T–32T), this e-bike delivers reliable torque and smooth shifting. Whether climbing hills or cruising long stretches, the system ensures steady power, better control, and reduced leg fatigue.

Alloy Suspension Fork (3.15" Travel)

Our premium front suspension fork absorbs road shock and trail bumps with ease, improving comfort and handling. With 3.15 inches of travel, it helps reduce fatigue on longer rides and enhances control over rough or unpredictable surfaces.

5-Level Pedal Assist + Half-Twist Throttle

Customize your ride with five levels of pedal assist or use the half-twist throttle for effortless cruising. Reach speeds up to 28 MPH and enjoy up to 60 miles of range per charge—ideal for daily commuting or extended weekend rides. Whether you need a boost uphill or just want to coast, it adapts to your pace.

Hydraulic Disc Brakes (Tektro 180mm)

Equipped with Tektro 180mm hydraulic disc brakes, this e-bike ensures consistent, powerful stopping in all weather. Whether you're navigating traffic or descending a slope, these brakes provide smooth, responsive control with minimal hand effort.

Ergonomic Adjustable Comfort Saddle

The leather-padded saddle is ergonomically designed to support your hips and reduce pressure points. With height adjustability to suit riders of different sizes, it promotes proper posture and riding comfort—whether you're commuting daily or exploring new routes.

All-Terrain 26×4.0" Fat Tires

Built for versatility, our 26×4.0-inch puncture-resistant fat tires provide exceptional traction across sand, snow, gravel, and city streets. The wide contact surface improves stability and reduces vibration, making every ride smoother and more effortless, even on uneven or loose terrain.

General

Electronics

Components

General

Frame 6061 Aluminum Alloy
Rear Basket Load Capacity 55lbs, Optional, a separate purchase needed
Rider Height 5'3" - 6'5"
Frame Style Trail or off road
Speed 20 MPH, Unlockable to 28 MPH
Range Up to 60 Miles
Type Trail, Off-Road
Brake Levers Tektro Brake Lever with Power Cut-Off Sensor
Bell Included
Rotors 180mm Rotor
Kickstand Alloy Rigid Side Kickstand
Bike Weight 70lbs including the battery weight
Total Weight Limit 300 lbs
Ideal Use Trail or off road

Pedal Assist 5 Levels
Charger 54.6V DC, 3A smart charger, operates on 100V-240V AC power outlets
USB Port One USB-C port, located on display
Headlight 48V LED with quick disconnect
Motor Hub 48V 750W 85Nm
Battery 48V15Ah (720Wh) Canbus Protocol, Certified by UL 2271
Sensor Cadence Sensor
Cell LG 21700 5000mah cells
Charging Time About 5 Hours
Display Color Display and 5 Speed Levels, Canbus Protocol
Throttle Assist Half Twist Throttle
Tail Light LED with brake light

Chainrings 52T Alloy Forged
Crankset Alloy Forged 6.89"
Rear Derailleur Shimano RD-M360/acera
Brakes Tektro Hydraulic Disc Brakes
Rims 26'' * 3.15" 36h, Alloy Double Wall
Tires Vee 26''*4.0, 72TPI
Spokes Stainless Steel, 13G Front / 12G Rear
Handlebars Aluminum Alloy, D:1.25" W:29.53"
Stem Black 3D Forged, 3.15" Length, 7° Rise, 1.25" Handlebar Clamp
Saddle Custom made comfy Leather Seat (Litchi Texture)
Seatpost 1.21" 13.78" length, forged and rigid
Fenders Metal, Optional, a separate purchase needed
Pedals Wellgo Brand, Double Bearing and Forged
Rear rack Black Aluminum Alloy, Optional, a separate purchase needed
Cassette Shimano CS-HG20-8/12-32T/8sp cassette
Front Fork Alloy threadless and oil suspension with lockout, 3.14" travel
Shift lever 8sp Trigger Lever
Chain 128 links, 8sp, KMC Rust-proof

Real-world Range Testing

Full Throttle: works from level 1 to 6.

Normal

Max. Spd:

MPH

Range:

26.65

Miles

Pedal Assist: works from level 1 to 5.

Level1

Max. Spd:

MPH

Range:

66.52

Miles

Level2

Max. Spd:

MPH

Range:

61.82

Miles

Level3

Max. Spd:

MPH

Range:

49.92

Miles

Level4

Max. Spd:

MPH

Range:

39.75

Miles

Level5

Max. Spd:

MPH

Range:

29.35

Miles

Be aware that the cruising range may differ based on the riding conditions.

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To unlock the top speed of your Fastron SO, which is set to a default of 20 MPH, follow these steps: Navigate to the settings page on the display -> Enter the advanced settings -> Input the password (please email us to obtain the password) -> Change the C3 option from 'off' to 'on' -> Save the settings and exit. This will activate the capability to reach up to 28 MPH.

Fat tires significantly improve traction and stability on a variety of terrains, offering a smoother, more comfortable ride. Their wide surface area enhances grip in both wet and dry conditions, reducing the impact of bumps and ensuring a safer, more controlled cycling experience across all terrain types.

The Fastron SO, a step-over bike, features a high top tube for unmatched stability and power, providing better control and efficiency for those who love speed and adventure. It's perfect for off-road riding, making it ideal for active riders!

The only difference between the Fastron ST and Fastron SO is the design of the top tube. Your choice depends on personal needs and cycling habits. If you're looking for easy mounting/dismounting and a comfortable ride, the Fastron ST's step-thru design is for you. But if you crave speed, intense riding experiences, or need extra stability for challenging conditions, the Fastron SO's step-over design is the better option.

The recommended rider height is 5'3" ~ 6'4", payload 350lbs at maximum.

To charge your Fastron SO's battery, you have two options: Directly connect the charger to the charging port on the bike's frame, or use the key to unlock the battery package, remove the battery, and charge it separately. A full charge typically takes only 4-5 hours.

For further information and solutions, please refer to our FAQs or email info@leoguarbikes.com.

Fastron SO Manual download Fastron SO Fat Tire Ebike

You Can Tell Its Well Built

One thing I noticed right away: the welds on the frame are clean and tightway better than my last e-bike. It just feels sturdy, like its not going to rattle apart after a few months. Makes me feel like I made a good choice quality-wise.

Im really into the black fat tire look. Its understated yet still turns heads. Plus, the ride quality is amazingsmooth and solid, just what I wanted.

Bought this bike after seeing it recommended by a YouTuber I trust, and wow, it does not disappoint! Its everything I hoped for and even exceeded my expectations.

Been riding a lot lately with the nice weather, and this e-bike has been super fun and reliable. Its smooth, easy to handle, and just makes getting around more enjoyable. Ive read it handles snow well too, so Im kind of excited to see how it performs once winter hits.

Im 6'2", and the 26inch wheels fit me perfectly. The adjustable seat post made it easy to get the perfect fit. Couldnt be happier with the sizing.

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Fastron SO Fat Tire Ebike