Aostirmotor S18-1500W Full-Suspension Fat Tire Electric Bike

10 reviews

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Full-Suspension Fat Tire Electric Mountain Ebike

Powerful 1500W Rear Hub Motor

48V/15Ah Long-Range Lithium-Ion Battery w/ Samsung Cells


aostirmotor dealer authorized logo for really good ebikes


Aostirmotor S18-1500W Description

Do you crave speed and power? Do you want a fat tire electric mountain bike that can tackle the steepest and roughest terrain out there? Well, get ready for an ebike riding experience like no other. 

The Aostirmotor S18-1500W is an off-road beast. I've tested a lot of powerful fat tire electric mountain bikes, and the S18-1500W really blew me away. I rode this ebike on some of the gnarliest single-track trails I could find, and I was really impressed with the sustained power output.

Aostirmotor 1500W is not just about power. It offers a full suspension frame, which along with the fat tires, will absorb a lot of the bumps you might encounter on a rugged trail.

The Aostirmotor S18-1500W battery is integrated into the curved 6061 aluminum alloy frame and offers 48V of power and a long-range 15Ah capacity. The range will vary by several factors, including total payload, surface conditions, and riding style, but on average you should expect about 36 miles of range per charge. The battery can be removed from the bike for remote charging.

Using the electronics on the Aostirmotor S18-1500W fat tire electric mountain bike was intuitive and easy to learn. You can turn on the 5-level pedal assist system (PAS), and monitor all essential readouts on the display. And if you prefer to ride without the need for pedaling, just give the right-side throttle a twist, and you're off!

In this video, D Krenz gives his 10/10 review of this amazing S18-1500W powerful electric Mountain bike.

S18-1500W Specifications

  • Motor: Boneng Brand 1500W Rear Hub Motor
  • Battery: 48V/15Ah Removable Samsung Lithium-Ion Battery
  • Controller: 48V/30A
  • Charger: 110-220V
  • DisplayYolin YL90T-H LCD Color Display or Yolin YL81F LCD Color Display
  • Drive Modes: 5-Level Pedal Assist System, Right Side Half-Twist Throttle & 7-Speed Shimano Sunrace Derailleur
  • Charge Time: 4-6 Hours
  • Frame: Full Suspension 6061 Aluminum Alloy Frame
  • Handlebar: 31.8mm x 660mm
  • Stem: 28.6mm x 31.8mm x 110mm
  • Brake: Tektro Mechanical Disc Brakes w/ 180mm Front & Rear Rotors
  • Tire: 26” x 4” Fat Tires Mounted on Aluminum Alloy Spoked Wheels
  • Front Suspension: Zoom Hydraulic Fork w/ Lockout
  • Rear Suspension: Rear Spring Shock
  • Saddle: City Type 27.2mm x 250mm
  • Light: Front Light and Rear Brake Light
  • Fender: Included
  • Rear Rack: Included
  • Max Speed: 30 mph
  • Weight: 77 Lbs.
  • Product Size: 77” x 43”
  • Box Dimensions & Weight: 64” x 11” x 32” (88 Lbs.)
  • Seat Height: 34” - 39”
  • Standover Height: 33”
  • Weight Capacity: 300 Lbs.
  • Assembly: This S18-1500W comes mostly assembled. Final assembly includes attachment of the pedals, handlebar, front wheel, seat, fenders and light. Please see the assembly video below.
  • Tools Required: 4mm, 5mm and 6mm hex (Allen) keys, and 8mm/10mm and 13mm/15mm wrenches (Included)
  • Shipping: Free shipping to the lower 48. For shipping to Canada, please send us your shipping address and the products you want, and we will find the best rate available. We cannot ship this brand to Alaska or Hawaii at this time.


Aostirmotor S18-1500W Unboxing and Assembly Instructions

Here is a detailed video to assist with the unboxing and assembly of your new S18-1500W full-suspension bike.


 Aostirmotor S18-1500W Display Instructions

Orders for in-stock items take 24-48 hours to process, then about 5-7 days in transit. Delays due to Covid have occurred. If an item is on backorder, the estimated ship date will be shown below the Pre-Order Button.

All products are shipped free within the Contiguous US via UPS, FedEx or similar carrier. Shipping to AK, HI and PR may incur additional charges.

If your package appears damaged from shipping, please do not accept it. Tell the driver to keep the package and contact us immediately at 888-883-3350. We offerGuide Package Protectionto ensure against lost, stolen or damaged goods. Click here to learn more about Guide.

Returns for buyer’s remorse are typically not accepted by our suppliers, and if accepted, the customer may incur shipping and restocking fees.

Please click here to read our entire Shipping & Returns Policy.


Ask a Question
  • Is there any way to mount a rear carrier rack to the AOSTIMOTOR S18 1500W Bike? I love the suspension on this thing, but if I can't add a carrier rack to it, it's a bit worthless to me.

    There are seat post mounted rear racks that work with full suspension ebikes. Check Amazon for options.

Customer Reviews
5.0 Based on 10 Reviews
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Filter Reviews:

    Great bike

    Ordered on Saturday arrived Thursday took the bike on logging roads real steep to flat it went up fair steep grades with assit great bike . Battery charges back up going downhills

    Donald A.
    United States United States

    Really Good Ebikes

    Thank you very much for the review.


    Very High Peformance

    I am very impressed with this bike. It's super fast and responsive, and I haven't found a hill that it can't climb with authority. Amazing what you can get for under 2 grand these days.

    Tony S.
    United States United States

    In Stock & Shipped in 24 Hours

    Everyone is complaining about the broken supply chain, but you guys shipped this out and I got my new ebike in 5 days. It's so much fun to ride. Life changing. Thank you!

    Rodger M.
    United States United States

    Really Good Ebikes

    Aostirmotor has been great. Thanks for the review.


    What A Bike!

    I got this bike to go on a hunting trip with a few friends. Everyone loved it, we all had bikes but this S18-1500W was the favorite by far. We had so much fun. Thanks Really good Ebikes for all your help.

    Trevor G.
    Dominica Dominica

    Really Good Ebikes

    Glad to hear your trip went great. Thanks for the awesome review.


    This Bike is a Blast!!!

    It is really easy to navigate the controls while I'm riding, it handles beautifully, the seat is comfortable, and the charge lasts a really long time. I'm having so much fun. I am 100% happy with my bike and the great customer service I received.

    Tony B.
    Dominica Dominica

    Really Good Ebikes

    I am glad to hear that you love it. Thank you for the awesome review.