FREE Shipping Lower 48! -- NEW $150 OFF ANY EBIKE OVER $1499 USE CODE summer23
Click to call 732-202-1114

Aostirmotor 750W S18 Fat Tire Electric Mountain Bike


The Aostirmotor 750W S18 Fat Tire Electric Mountain Bike
750W full suspension unique style, Affordable performance!
Fast Shipping from our US warehouse
FREE Shipping to lower 48 states

Trust Badge Image


Share it!

Aostirmotor 750W S18 Fat Tire Electric Mountain Bike –

A Strong Endurance Mountain Bike We designed the S18 to give you the absolute best riding experience. It embodies a thoughtful balance of classic design, powerful performance and practical utility features. A perfect blend of power, features, functionality and affordability!

aostir s18 montage
The Aostirmotors 750W S18 Fat Tire Electric Mountain Bike

Outstanding Design: Our powerful 750W motor is coupled with our 720Wh high capacity lithium battery! This combination will take you further, and have you tackling hills and terrain you’d only ever dreamed of! The Aostirmotor 750W S18 Fat Tire Electric Mountain Bike features a front suspension fork and a rear spring shock for a controlled, engaging, smooth ride.

Great Performance: 26*4.0 fat tires provide you with the comfort, stability, and confidence to take your S18 wherever you want to adventure. It can ride 30km in pure electric mode.

Load capacity: 300lb.

Easy to assemble: 90% pre-assembled. Our electric bicycles still require customers to assemble pedals, handlebar, front tire, display, etc.

Fast USA Shipping from US Warehouse

FREE Shipping to lower 48 states in the USA

Complete Customer Satisfaction Guaranteed!

Highlighted Features

aostir s18 crankset
Quality crankset and pedals
aostir s18 forks
Adjustable front forks soak up the bumps
aostir s18 rear shock
The lay down rear suspension geometry offers great travel to soak up the terrain
aostir s18 motor
Powerful 750W rear hub motor
aostir s18 display
Crisp LCD display delivers all the key driver data
aostir s18 battery
48V 15AH BATTERY Long Rides Waterproof, Removable Get up to 20 miles on a single charge and easily recharge the battery on or off the bike.
aostir s18 sizing

Additional information

Weight 60 lbs
Dimensions 67 × 12.8 × 33.5 in
Frame Color

Black, Cobra ($100), Grey

Frame Size

17" Factory Aluminum, 19" Factory Aluminum

Warranty Info

All original components are guaranteed for a period of 1 year from the date of delivery, excluding any customizations, or purchase of additional warranty.

This warranty is expressly limited to the replacement of a defective frame, or defective parts and is the sole remedy of the warranty. This warranty applies only to original owners and is not transferable. Claims under this warranty must be made by emailing or using our contact form . Proof of purchase is required. We advise you to keep your box, since replacement boxes are not covered by the warranty. If you need a replacement box, we’ll send you one for an additional fee.

This warranty does not cover normal wear and tear, improper assembly, improper follow-up maintenance, or installation of parts or accessories.

The warranty does not apply to damage or failure due to accident, misuse, abuse, or neglect. Modification of the frame or components shall void this warranty.

Common Specifications

  • Please note: Due to logistics policy, your order will be shipped with two packages. One package is BICYCLE and the other is BATTERY.
Battery 48V 15Ah lithium battery
Motor 750W Motor    (Brand: TRUCK, Refer to Bafang Quality)
Controller 48V 22A
Charger 110-220V(US/Europe)
Display SW-U-LCD
Turn-Handle Rotary
Power sensor PAS intelligent pedal assistant system
Charge Time 4-6 hours   (Recharge regularly to extend the life of battery)
Frame 6061 Aluminum Alloy
Handlebar 31.8*660mm
Stem 28.6*31.8*110mm
Rear Rack NO (Optional)
Brake F/R Mechanical Brake(With 4pcs Brake Pads)
Disc Brake Front 180 & Rear 160
Brake lever Universal
Rim form Spoke wheel
Rim Material Aluminum alloy
Tire 26×4.0 inch Fat Tire
Gear Shift Lever 7 Speed Dial SHIMANO/Sunrace
Derailleur 7 Speed SHIMANO/Sunrace
Throttle With
Front suspension Fork shock absorption
Rear suspension Rear spring shock
Structure shock absorption Lightweight Aluminum Alloy Frame
Saddle City type
AL6061 T4T6
Tube Clamp D1=30mm  D2=38mm
Light With Front and Rear light
Pedal Universal
Footrest Universal
Fender With
Riding mode Pedal Mode / Boost Mode / Power Mode
Range Distance 25-35 km (Pure Power mode)
Max Speed 45 km/h
Color Black
Net Weight 35kg
Gross Weight 40kg
Product Size 195*110cm
Package Size 163*28*82cm
Saddle Height 88-100cm
Weight Capacity 300 LB
Electric Bike 1 pcs
Li-ion Battery 1 pcs
Tool Kit 1 pcs
Manual 1 pcs
Charger 1 pcs
Pedal 1 pcs

Shopping cart


No products in the cart.

Continue Shopping