Aostirmotor S07-B/E/F 750W Fat Tire Electric Mountain Bikes

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S07-B (Black)
S07-E (Camouflage Green)
S07-F (Camouflage Blue)

Powerful 750W (Nominal) Rear Hub Motor w/ High Torque Output

48V/13Ah Long-Range Down-Tube Mounted Lithium-Ion Battery

26” x 4” Fat Mountain Bike Tires


aostirmotor dealer authorized logo for really good ebikes


Aostirmotor S07-B/E/F Description

Are you looking for a powerful fat tire electric mountain bike to take on your next off-road adventure? Well, take a look at the bestselling S07s from Aostirmotor Ebikes. When I first test rode this beast, I was very impressed. From its lightweight 6061 Aluminum Alloy frame to its high-torque motor, the performance was on par with ebikes twice its price. 

Aostirmotor Ebikes is known for producing a range of high-quality ebikes at budget prices, and the S07s are no exception. The only difference between these models is the color. They come with 7-speed Shimano Sunrace gears which shifted smoothly throughout their range and gave me a nice workout before I turned on the electronics. 

They say the 48V S07s can reach a top assist speed of 28 mph, and they weren't kidding. This ebike goes fast. I found the 5-level Pedal Assist System (PAS) to be very responsive, sensing the changes in the amount of torque I was applying to the pedals. The half-twist throttle had an easy-grip narrow profile and was quite springy and responsive to minor adjustments. The motor is paired with a 13Ah lithium-ion battery for an extended range of travel per charge. 

Aostirmotor S07-B/E/F Specifications

  • Motor: Truckrun Brand 750W Rear Hub Motor
  • Battery: 48V/13Ah Down-Tube Mounted Lithium-Ion Battery
  • Controller: 48V/22A
  • Charger: 110-220V
  • Display: Aostirmotor SW-U-LCD Display
  • Drive Modes: 5-Level Pedal Assist System (w/ Speed Sensor), Right Side Half-Twist Throttle & 7-Speed Shimano Sunrace Derailleur
  • Charge Time: 4-6 Hours
  • Frame: 6061 Aluminum Alloy Hardtail Frame
  • Handlebar: 31.8mm x 660mm
  • Stem: 28.6mm x 31.8mm x 110mm
  • Rear Rack: Included
  • Brake: Mechanical Disc Brakes w/ 180mm Front & 160mm Rear Rotors
  • Tire: 26” x 4” Fat Tires Mounted on Aluminum Alloy Spoked Wheels
  • Front Suspension: Zoom Hydraulic Fork w/ Lockout
  • Saddle: City type 27.2mm x 250mm
  • Light: Front Light
  • Fender: Included
  • Max Speed: 28 mph
  • Weight: 73 Lbs.
  • Product Size: 76” x 44”
  • Box Dimensions & Weight: 62” x 11” x 33” (83.7 Lbs.)
  • Minimum Seat Height: 31”
  • Maximum Seat Height: 35”
  • Handlebar Height: 44”
  • Handlebar Length: 26”
  • Standover Height: 33”
  • Weight Capacity: 300 Lbs.
  • Assembly: The S07-B/E/F comes mostly assembled. Final assembly includes attachment of the pedals, handlebar, front wheel, seat, fender 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 S07s Assembly Instructions

Have a look at this step-by-step unboxing and assembly video of the Aostirmotor S07-B.

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.


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