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. 


  • 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)