Big Sur G2 20Ah
500W | 80Nm | 960Wh
The Big Sur is built for adventure, embodying the true spirit of the wilderness. Engineered for the most demanding riders and tough duties, both on-road and off thanks to its robust, high-payload frame and oversized tires. Highly versatile and among the most capable E-Bike in its category, it is powered by a UL certified complete Bafang system for the highest level of safety, performance and reliability.
MSRP: 3,190$
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Features & Benefits
- Robust extra high payload Step-Thru Aluminum frame, integral Smooth Welding
- UL Certified, Reliable Pedal Assist System, provided by Bafang
- Powerful Rear Hub Motor, 48V, 500W, Max Torque 80Nm
- Extra high capacity Lithium-ion Battery, 48V, 20Ah (960Wh)
- Torque Sensor
- Integrated Driving Lights & Blinkers Turn Signals
- Bluetooth Connected Navigation System
- Shimano Drivetrain
- Tektro E-Brakes, Hydraulic, 203mm Rotors
- Full Length Fenders and Rear Rack included
Detailed Specifications
Frame: Robust Step-Thru Hydroformed Aluminum alloy frame, Integral Smooth Welding, Internal Cable Routing,Integrated bearings, 100mm BSA, Fully Integrated rear Dropouts with LED Rear light / Brake / Turn Signal lights (remotely controled)
Fork: Zoom, 80mm travel Suspension Fork, Locking Lever, Spring Preload AdjustmentStem: Forged Alloy, 1-1/8” Threadless
Stem: Forged Alloy, Adjustable Angle, 1-1/8” Threadless, with Front Light Mount
Handlebar: Alloy, Riser, Ø31,8mm, Width: 680mm
Grips: Comfort Ergo, Bolt-On
Seatpost: Alloy, Ø30.4mm Quick Release clamp
Saddle: Comfort Wide, Tear-Resistant, Integrated Springs and Lifting Handle
Shifters: Shimano Acera ST-M315, Rapidfire, 8 Speeds
Derailleur: Shimano Altus RD-M310, with Protecting Cage
Chainring: Direct Mount, Splined alloy spider, 52T
Cassette: Shimano HG, Megarange 11-34T
Chain: PYC, 1/2” x 3/32”
Pedals: Alloy, 9/16’’
Brakes: Tektro HD-E3520, Hydraulic Disc Brakes,with Power cut-off sensor
Rotors: Stainless Steel TR-52 Anti Vibration 203mm 6-Bolt rotors
Rims: 26’’, 36H, Wide Profile, Alloy, Schrader
Hubs: Front: Alloy, 135mm, Bolt-On, 6-Bolts Disc Mount, Rear: (See Motor)
Spokes: 12G Stainless Steel, Black
Tires: 26 x 4.0’’, Reflective Side Strips, E-Bike Rated Casing
Driving Lights: (Front): Stem-mounted white driving light, 600 lumens, (Rear): Integrated braking lights & Blinkers (remotely controlled)
Accessories: MIK-HD Alloy Cargo Rack, Fenders, Direct Mount Alloy Kickstand
Listed Weight: 82lbs (37 kg)
Max Payload: 400 lbs (180 kg)
Pedal Assist System
Motor: Bafang G062 48V Brushless Rear Hub, 500W, 36H*12G
Battery: Bafang BT F400, Semi-Integrated, 20Ah (960Wh) Lithium-ion
Display: Bafang DP C010, Bluetooth Connected, Color TFT LCD, Buit-in Navigation System
Sensor: Bafang SR PA242 Torque Sensor, JIS Bottom Bracket, BSA External Cups
Throttle: On Demand Thumb Press Button
Controls: (Left Side): Power / PAS level (Right Side): Blinkers Turn Signal Lights / Electronic Horn
Charger: AIMA 48V 3A Fast Charge
Estimated Range
Range varies significantly depending of motor power and battery capacity, and of course, depending on the selected power assist level. Other factors influencing range are nature of terrain, wind speed, gradient, riding style, total rider and cargo weight, tire pressure and temperature.
AIMA’s software provides the following estimated range figures based on a fully charged, brand new battery:
- Assist Level 1: 140 km
- Assist Level 2: 120 km
- Assist Level 3: 100 km
- Assist Level 4: 80 km
- Assist Level 5: 60 km
For optimal battery health, avoid fully draining the battery. Instead, aim to recharge when the remaining capacity drops to around 10% to help preserve long-term performance and lifespan.
Geometry & Fit
Braking Lights & Blinkers
Enhance your visibility and communicate your intentions clearly with thumb-controlled turn signals and active braking lights, allowing other riders to anticipate your movements.
Navigation System
Built-in GPS navigation with smartphone integration for seamless route planning and tracking.
Removable Battery
Keep your battery safe from elements and thieves when transporting or storing your E-Bike
Bright Front Light
Integrated front light offers good road illumation and improves visibility
Hydraulic Disc Brakes
Powerful brakes allows for effortless, predictable braking. Extra large rotors prevents heat build-up and preserve performance on all conditions
Advanced Welding
AIMA’s signature craftsmanship, built on advanced manufacturing techniques, delivers seamless, virtually invisible welds — a refined finish that reflects premium quality
Wide Saddle
A comfort-focused saddle engineered to accommodate a wide range of riders and riding positions, ensuring balanced weight distribution and reduced pressure — even on longer rides.