AIMA Big Sur U
The AIMA Big Sur U is an electric bike with a 48 V 15Ah pack, a 750W motor, a stated top speed of 20 MPH, a stated range of up to 60 miles, a weight of 36.4 kg, About 5 H to a Full Charge and a 20" wheel.
Last updated: 6 November 2026
Motor and performance
- Motor position
- Rear Hub Motor
- Motor make
- BAFANG
- Motor
- 750W
- Top speed
- 20 MPH
- Claimed range
- Up To 60 Miles
- Payload capacity
- 400 lbs 181 kg
- Throttle
- Throttle on Demand
- Motor specification
- Rear Hub Motor, BAFANG, 750W
- Pedal assist levels
- 5 PAS Levels
- What the assist responds to
- Torque / Cadence
“Rear Hub Motor, BAFANG, 750W”
Source: aimatech.us/products/big-sur-u-ebike
“Rear Hub Motor, BAFANG, 750W”
Source: aimatech.us/products/big-sur-u-ebike
“Rear Hub Motor, BAFANG, 750W”
Source: aimatech.us/products/big-sur-u-ebike
“The Big Sur U is delivered as a Class 2 eBike with a top assisted speed of 20 MPH.”
Source: aimatech.us/products/big-sur-u-ebike
“Go Up To 60 Miles 48V 15Ah removable battery for longer range.”
Source: aimatech.us/products/big-sur-u-ebike
“Payload Capacity 400 lbs 181 kg”
Source: aimatech.us/products/big-sur-u-ebike
“Throttle Throttle on Demand”
Source: aimatech.us/products/big-sur-u-ebike
“Motor Rear Hub Motor, BAFANG, 750W”
Source: aimatech.us/products/big-sur-u-ebike
“Pedal Assist 5 PAS Levels”
Source: aimatech.us/products/big-sur-u-ebike
“Pedal Sensor Torque / Cadence”
Source: aimatech.us/products/big-sur-u-ebike
Battery and charging
- Battery
- 48 V 15Ah
- Charging time
- About 5 H to a Full Charge
“Battery 48 V 15Ah Cells LG Chargeing Time About 5 H to a Full Charge”
Source: aimatech.us/products/big-sur-u-ebike
“Battery 48 V 15Ah Cells LG Chargeing Time About 5 H to a Full Charge”
Source: aimatech.us/products/big-sur-u-ebike
Brakes and safety
- Brakes
- Tektro Hydraulic Disc 203 mm Brakes
- Lighting
- Front Light/Rear Light/ Rear Turn Lights
“Brake Tektro Hydraulic Disc 203 mm Brakes”
Source: aimatech.us/products/big-sur-u-ebike
“Lighting Front Light/Rear Light/ Rear Turn Lights”
Source: aimatech.us/products/big-sur-u-ebike
Frame and components
- Screen type
- C010 BAFANG E-system TFT Display (Find My, Sensor Selection Function)
- Fork
- "ZOOM "Suspension Fork, with Lockout
- Rear derailleur
- Shimano 7 Speed
- Rims
- Double Wall Aluminum Alloy
- Headset
- Sealed Bearing Headset
- Handlebar
- Aluminium Alloy 720mm
- Saddle
- AIMA Enlarged Comfort Saddle
- Seat post
- Aluminium Alloy 30.9mm
- Kickstand
- Aluminum Alloy Kickstand
- Frame material
- 6061 Single-Butted Aluminum Alloy Frame
- Seat post clamp
- 34.9mm Quick Release
- Wheel size
- 20"
- Front hub
- Aluminum Alloy Disc
“Display C010 BAFANG E-system TFT Display (Find My, Sensor Selection Function)”
Source: aimatech.us/products/big-sur-u-ebike
“Fork "ZOOM "Suspension Fork, with Lockout”
Source: aimatech.us/products/big-sur-u-ebike
“Rear Derailleur Shimano 7 Speed”
Source: aimatech.us/products/big-sur-u-ebike
“Rims Double Wall Aluminum Alloy”
Source: aimatech.us/products/big-sur-u-ebike
“Headset Sealed Bearing Headset”
Source: aimatech.us/products/big-sur-u-ebike
“Handlebars Aluminium Alloy 720mm Grips Ergonomic Comfort Headset Sealed Bearing Headset”
Source: aimatech.us/products/big-sur-u-ebike
“Saddle AIMA Enlarged Comfort Saddle”
Source: aimatech.us/products/big-sur-u-ebike
“Seatpost Aluminium Alloy 30.9mm”
Source: aimatech.us/products/big-sur-u-ebike
“Kickstand Aluminum Alloy Kickstand”
Source: aimatech.us/products/big-sur-u-ebike
“Frame 6061 Single-Butted Aluminum Alloy Frame”
Source: aimatech.us/products/big-sur-u-ebike
“Seat Clamp 34.9mm Quick Release”
Source: aimatech.us/products/big-sur-u-ebike
“Compact and stable 20" wheel platform”
Source: aimatech.us/products/big-sur-u-ebike
“Front Hub Aluminum Alloy Disc”
Source: aimatech.us/products/big-sur-u-ebike
Size and fit
- Weight
- 36.4 kg
- Rider height
- 5'0"-6'3"
- Total length
- 70.87"(1800mm)
- Overall dimensions
- 1800*720*1140 mm
- Seat height, lowest
- 30.94"(786mm)
- Seat height, highest
- 38.03"(966mm)
- Head tube length
- 6.30"(160mm)
“Weight 80.3 lbs 36.4 kg Payload Capacity 400 lbs 181 kg”
Source: aimatech.us/products/big-sur-u-ebike
Row from the maker’s page: “One Size” | “5'0"-6'3"”
Source: aimatech.us/products/big-sur-u-ebike
“Overall Length 70.87"(1800mm)”
Source: aimatech.us/products/big-sur-u-ebike
“Dimensions (L×W×H) 1800*720*1140 mm”
Source: aimatech.us/products/big-sur-u-ebike
“Min Saddle Height 30.94"(786mm)”
Source: aimatech.us/products/big-sur-u-ebike
“Max Saddle Height 38.03"(966mm)”
Source: aimatech.us/products/big-sur-u-ebike
“Head Tube Length 6.30"(160mm)”
Source: aimatech.us/products/big-sur-u-ebike
Certification claims
- E-bike class
- Class 2
“The Big Sur U is delivered as a Class 2 eBike with a top assisted speed of 20 MPH.”
Source: aimatech.us/products/big-sur-u-ebike
Sources
- AIMA | Big Sur U EbikeArchived document
Source: aimatech.us/products/big-sur-u-ebike
Retrieved October 20, 2026