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Home / Products / AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada main full suspension view
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada fat tire side profile
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada rear suspension detail
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada battery and frame detail
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada handlebar display view
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada front fork detail
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada trail angle view
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada brake and wheel detail
AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada rear angle fat tire view
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AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada

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In stock on Amazon.ca · Last checked: June 16, 2026

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OUR TOP PICK

In stock on Amazon.ca as of June 16, 2026
Product Overview

AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada is a full-suspension fat tire electric mountain bike for Canadian riders who want full-suspension comfort with 26 x 4.0 inch fat tire traction.

A 750W rear hub motor and 48V 22A controller provide strong support for hills, gravel, and rough paths.. The removable 48V 15Ah Samsung-cell battery supports longer pedal-assist rides and can be charged indoors.

Full suspension and 26 x 4.0 inch fat tires improve comfort and grip on rough Canadian surfaces..

The advertised 750W rear hub motor motor and up to 45 km/h speed can exceed common Canadian public-road e-bike limits. Rules vary by province and municipality. Check local regulations before riding, and use appropriate speed settings, routes, and safety equipment.
Key Features & Benefits

750W REAR HUB MOTOR: Strong trail and hill support.

48V 15AH REMOVABLE SAMSUNG-CELL BATTERY: Samsung-cell removable pack supports indoor charging.

26 X 4.0 INCH FAT TIRES: Wide tires add grip and stability on mixed Canadian surfaces.

FULL SUSPENSION FRAME WITH FRONT AND REAR SUSPENSION: Adds comfort and control on rough surfaces.

TEKTRO MECHANICAL DISC BRAKES: Provides stopping control.

7-SPEED SHIMANO OR SUNRACE DRIVETRAIN: Adds gearing for starts, climbs, and cruising.

LCD DISPLAY AND REMOVABLE BATTERY: Practical equipment for daily use.
Specifications

Brand: AOSTIRMOTOR

Model: S18

Motor: 750W rear hub motor

Battery: 48V 15Ah removable Samsung-cell battery

Controller: 48V 22A

Charger: 110V to 220V, 4 to 6 hours

Display: SW-U-LCD

Drivetrain: 7-speed Shimano or Sunrace drivetrain

Frame: Full-suspension 6061 aluminum alloy

Suspension: full suspension frame with front and rear suspension

Brakes: Tektro mechanical disc brakes

Tires: 26 x 4.0 inch fat tires

Range: about 35 km throttle-heavy use and up to 80 km with pedal assist

Advertised maximum speed: Up to 45 km/h

Weight: about 36 kg

Maximum load: 300 lb / 136 kg

Extras: LCD display and removable battery

Colour: Black
Performance & Power

A 750W rear hub motor and 48V 22A controller provide strong support for hills, gravel, and rough paths.

Power is managed through 5-level pedal assist, half-twist throttle, and 7-speed gearing.

The advertised 750W rear hub motor motor and up to 45 km/h speed can exceed common Canadian public-road e-bike limits. Rules vary by province and municipality. Check local regulations before riding, and use appropriate speed settings, routes, and safety equipment.
Battery & Range

The removable 48V 15Ah Samsung-cell battery supports longer pedal-assist rides and can be charged indoors.

Rated range is about 35 km throttle-heavy use and up to 80 km with pedal assist. Real range depends on rider weight, hills, temperature, speed, tire pressure, surface, and assist level.

Charging indoors at moderate temperatures helps protect battery performance in winter.
Safety Features

TEKTRO MECHANICAL DISC BRAKES: Provides stopping control in normal riding conditions.

26 X 4.0 INCH FAT TIRES: Improves traction and stability on rough or loose surfaces.

FULL SUSPENSION FRAME WITH FRONT AND REAR SUSPENSION: Adds comfort and control on rough surfaces.

DISPLAY: Ride data helps manage speed, assist level, and battery use.

ROAD-RULE AWARENESS: The advertised 750W rear hub motor motor and up to 45 km/h speed can exceed common Canadian public-road e-bike limits. Rules vary by province and municipality. Check local regulations before riding, and use appropriate speed settings, routes, and safety equipment.
Pros & Cons (Honest Verdict)

PROS: full suspension, 750W power, Samsung-cell battery, fat tires, Tektro brakes, and long pedal-assist range.

CONS: heavy build, mechanical brakes, and advertised output above many public-road limits.

VERDICT: Choose it for full-suspension comfort and trail stability.
Should You Buy It?

Buy AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada if you want full-suspension comfort with 26 x 4.0 inch fat tire traction.

It fits riders who value comfort, removable-battery range, and wide tire grip.

Choose another model if you need low weight, folding storage, or hydraulic brakes. Check provincial and municipal rules before riding on public roads or shared paths.
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Expert Review: S18 Full Suspension Fat Tire E-Bike

S18 is best understood as the full-suspension comfort option in the AOSTIRMOTOR fat tire range.

The strongest reasons to consider it are comfort, removable-battery range, and wide tire grip.

The tradeoffs are weight and mechanical braking, so choose it for the right route and storage situation.

✅ Proudly Canadian 🇨🇦. Real People. Real Product Support.

At StreetRides.ca, we’re more than a product showcase, we’re your Canadian e-mobility guide, helping you choose with confidence. With 24/6 Canadian-based chat support, quick answers, and real people who understand your needs, you’re never left guessing.

Enjoy the peace of mind that comes with local guidance, trusted recommendations, and a website built by Canadians, for Canadians.

Browse smart. Shop local. Trust StreetRides.

Aostirmotor S18 vs balanced all-terrain e-bikes

The S18 is the middle-ground Aostirmotor model. This table shows how it compares with the more aggressive S17, the easy-access Queen, and the compact Storm.
Choose S18 if you want the safest all-around balance of power, comfort, and range.
A comfort-and-control comparison for riders who want the most well-rounded Aostirmotor bike.
Product Product Ride comfort Battery and range Power and speed Best rider match
AOSTIRMOTOR S18 The easiest Aostirmotor bike to recommend broadly. 750W rear hub Strong enough without feeling excessive. 48V 15Ah Samsung battery A good balance for range and weight. Full suspension frame Makes rough roads feel less busy. Best all-around ride Best for riders who want comfort and control first. Balanced trail bike The middle-ground answer for everyday owners.
AOSTIRMOTOR S17 1500W The obvious upgrade if you want more power. 1500W motor A harder-hitting option if you want more punch. 48V 20Ah battery More range headroom than the S18. 50 kph claim A more aggressive speed story. Power-first alternative Best if speed matters more than comfort balance. Aggressive upgrade The step up if the S18 feels too calm.
AOSTIRMOTOR QUEEN 1000W The most accessible everyday option. Low-step access Easier mounting than the higher frames. 1000W motor A stronger everyday ride without going overboard. Rear rack included Makes utility and errands easier. Comfort utility Best if you value access and convenience. Easy-use alternative The bike that feels easiest to live with.
AOSTIRMOTOR Storm The mixed-use alternative with a compact feel. Commuting/trail hybrid A useful middle lane between city and dirt. Magnesium alloy frame A distinctive frame story. 20x4 fat tires A lighter, more compact stance than the S18. Hybrid utility Best if you want one bike for varied riding. Versatile compact ride The mixed-use alternative.

How this comparison was built

Street Rides compared current listings, published specs, and recurring buyer questions. Real range and speed depend on rider weight, terrain, assist level, temperature, tire pressure, and local rules.

Source notes

Street Rides Aostirmotor S18 listing and all-terrain comparison set.

Find Your Ride

AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada fat tire side profile
Power and Control

A 750W rear hub motor and 48V 22A controller provide strong support for hills, gravel, and rough paths.

The assist and gearing help riders manage speed, climbs, and battery use.

AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada rear suspension detail
Battery and Range

The removable 48V 15Ah Samsung-cell battery supports longer pedal-assist rides and can be charged indoors.

Indoor charging helps protect battery performance during Canadian winter.

AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada battery and frame detail
Tires and Ride Feel

Full suspension and 26 x 4.0 inch fat tires improve comfort and grip on rough Canadian surfaces.

The tire and frame setup define where this model feels most confident.

AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada handlebar display view
Practical Equipment

LCD display and removable battery make the bike more useful for everyday riding.

These details matter for commuting, errands, storage, and mixed-weather use.

FAQ

AOSTIRMOTOR S18 Questions

Range, Battery, and Canadian Use

AOSTIRMOTOR S18 750W Full Suspension Fat Tire E-Bike Canada front fork detail

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