AIMA Big Sur 2.0

Big Sur 2.0 is a versatile fat-tire e-bike built for both daily commuting and off-road riding. Powered by a 750W Bafang rear hub motor and a refined 48V battery system, it delivers strong acceleration, dependable hill-climbing performance, and extended riding range. Its UL2849-certified electrical system, hydraulic disc brakes, front suspension, and 26" x 4" all-terrain tires provide confident handling and comfort across a variety of surfaces. Compared to the original model, the Big Sur 2.0 features upgraded ergonomics, smoother power delivery, and improved system integration for a more refined overall riding experience. Ride Further with Confidence. Enjoy up to 75 miles* on a single charge thanks to the upgraded 48V 20Ah battery — that’s 33% more range than our 1st Gen. Quieter, More Efficient Power. Compared to our already whisper-quiet first-generation motor, the new 750W version cuts noise by another 10dB while improving energy conversion—delivering the same quick, powerful acceleration with even greater efficiency. Effortless, Natural Pedal Assist. The torque sensor instantly reads your pedaling and adjusts motor output for seamless, natural assistance every time you ride. Never Miss a Turn... or a Call. The larger 4.0” display keeps stats clear at a glance, with FindMy and Bluetooth connection so you can mirror navigation, calls, and messages from your phone through app. Built Like a Tank. A reinforced frame stands up to rough terrain and daily use, delivering long-term reliability in any riding environment. Confident Braking Power. 203mm hydraulic disc brakes provide strong, consistent stopping ability—even on steep hills or in wet conditions. UL2849 Certified. A comprehensive safety standard for the electrical systems of e-bikes, ensuring batteries, chargers, and motor controllers operate safely under stress conditions. Features Key Features MOTOR: 750W Bafang rear hub, ~1200W peak, 85 Nm torque BATTERY: 48V 20Ah (960 Wh) removable lithium-ion, up to 75 miles* range under ideal conditions CLASS: Class 1 (pedal assist to 20 mph), Class 2 (throttle to 20 mph), Class 3 (pedal assist to 28 mph) BRAKES: Tektro hydraulic disc brakes, 203 mm rotors TIRES: 20″ x 4″ fat tires for stability and grip SUSPENSION: ZOOM front fork, 80 mm travel, adjustable preload, lockout DISPLAY: 4.0″ Bafang TFT with Bluetooth, navigation, calls, notifications, FindMy LIGHTS: Integrated headlight, tail lights, turn signals, horn CHARGING: 48V 3 A fast charger, ~7–8 hours to full Customization & Riding Modes PEDAL ASSIST MODE: Torque-sensing or cadence-sensing for active or relaxed pedal feel MOTOR TUNING: Adjust speed and power of each assist level via display or Bafang Go app APP FEATURES: Navigation, ride data tracking, battery health monitoring REAR RACK: MIK-HD cargo rack with locking storage or child seat option Specifications MOTOR Rear Hub Motor, BAFANG, 750W Peak Power: 1200W | Max Torque: 85Nm THROTTLE Throttle on Demand DISPLAY BAFANG E-system TFT Display Smart Function: FindMy, Navigation, Calls, Notifications CERTIFICATION UL2849 Compliant SPEED 20 MPH BATTERY Removeable Internal Lithium-Ion, 48V, 20Ah (960Wh) LIGHTING Integrated Headlight, Tail Lights, and Turn Signals w/Horn PEDAL SENSOR Customizable w/Torque & Cadence Modes PEDAL ASSIST 5 PAS Levels CHARGER 48V, 3 Amp Fast Charger, 7-8 Hours to a Full Charge RANGE* 40-75 miles* FRAME 6061 Single-Butted Aluminum Alloy Frame WEIGHT 82lbs PEDALS 9/16" Alloy Platform FORK ZOOM Suspension Fork, 80mm Travel, Adjustable Preload, Lockout PAYLOAD CAPACITY 400lbs KICKSTAND Aluminum Alloy Kickstand CRANKSET 170mm w/ 52T Chainring SHIFTER Shimano 8 Speed DERAILLEUR Shimano 8 Speed CASSETTE 8 Speed, 11-34T BRAKES Tektro Hydraulic Disc Brakes, 203 mm Rotors CHAIN 8 Speed RIMS Double Wall Aluminum Alloy SPOKES Black Stainless 12G Front / 12G Rear TUBES Butyl Rubber FRONT HUB Aluminum Alloy Disc TIRES 26" x 4.0" SADDLE AIMA Comfort Saddle SEATPOST Aluminum Alloy, 30.9mm 2-Bolt Clamp, 300mm STEM Threadless, 31.8mm, 7° Rise, 75mm Length SEAT CLAMP 34.9mm Quick Release HANDLEBARS Aluminum Alloy Double Wall, 31.8mm, 680mm HEADSET Sealed Bearing Headset GRIPS Ergonomic Comfort *RANGE: An ebike's battery life is influenced by several factors that can affect its maximum range. Many contributing factors include use of Pedal Assist, Average Cruising Speed, Tire Pressure, Load Weight, Terrain & Elevation, Wind, and Ambient Temperature. Review