AIMA Big Sur

AIMA Big Sur

$1,999.00 Regular price
$1,999.00 /
  • In stock, ready to ship

100% SATISFACTION Guarantee

Local Area Pickup available Contact Us


Big Sur is a 26 x 4” fat tire all-terrain e-bike, equipped with a powerful 750W Bafang rear hub motor. Big Sur is Class 2/3, meaning it'll take you up to 20mph using the throttle, and 28mph while pedaling. A specially-designed big headlight, extra-large 203mm brake rotors, LG 21700 battery cells, and a full UL2849 certification make Big Sur one of the safest e-bikes on the market. Sporting a bigger 52T crankset for stability at speed and a custom AIMA Comfort XL seat, Big Sur provides riders with a remarkably comfortable and smooth riding experience.

Technical Specifications

  • MODEL: Big Sur
  • MOTOR: 750W (Rated) / 1200W (Peak) , 48V Brushless Rear Hub Motor
  • THROTTLE: Throttle on Demand
  • DISPLAY: Color LCD, Smart Easy-to-Read Display with Backlight
  • SPEED: Up to 28 MPH Pedal Assist, 20 MPH Throttle Only
  • BATTERY: Removable Internal Lithium-ion 48V, 15Ah (720Wh) with LG M50LT 21700 cells
  • SENSORS: Torque Sensor
  • PEDAL ASSIST: 5 Levels
  • CHARGER: 48V 3 Amp Fast Charger, about 5 Hours to a Full Charge
  • RANGE: Up to 60 Miles
  • FRAME: 6061 Single-Butted Aluminum Alloy Frame with Internal Battery
  • WEIGHT: 82 lbs. ( Battery included)
  • PEDALS: 9/16' Alloy Platform
  • FORK: Suspension Fork with 80mm travel, with lockout
  • WEIGHT LIMIT: 400 lbs.
  • KICKSTAND: Included, Aluminum Alloy Kickstand 
  • CRANKSET: 170mm w/ 52T
  • SHIFT: Shimano 8 Speed
  • BRAKES: Tektro Hydraulic Disc Brakes
  • ROTOR: 203 mm
  • CHAIN: 130 Link, 8 Speed
  • RIM: Double Wall Aluminum Alloy
  • SPOKES: Black Stainless 12G Front / 12G Rear
  • TUBES: Butyl Rubber
  • HUBS: Front Aluminum Alloy Disc Hub 
  • TIRES: 26" x 4" Puncture Resistant
  • SADDLE: AIMA Comfort, 280mm*270mm Saddle
  • SEATPOST: Aluminum Alloy, 30.4mm 2-Bolt Clamp
  • STEM: Threadless, 31.8mm, 7 Degree Rise, Ext 75mm
  • SEAT CLAMP: 34.9 mm Quick Release
  • HANDLEBARS: Aluminum Alloy Double Wall, 31.8mm, 680mm
  • HEADSET: Sealed Bearing Headset
  • GRIPS: Ergonomic Comfort


Hub Motor and Battery
Powered by a 48V 15Ah battery using LG high-capacity cells, Big Sur's 750W Bafang rear hub motor has the juice to take you just about anywhere.

Torque Sensor
One of the latest e-bike innovations, a torque sensor sees how hard you pedal in real time and matches your input power using the motor. This leads to a safer and more intuitive ride, as well as conserving battery life.

Full Color Backlit LCD Display
View essential stats at any time with a bright and daylight-ready full color screen. Choose between several different themes to see your speed, battery life, pedal assist level, and much more.

26” x 4” Fat Tire
Big Sur's puncture-resistant 26" x 4" tires can handle almost any terrain, giving you the confidence you need to push your own riding limits off-road.

Suspension Fork
With up to 80mm of travel and adjustable preload and lockout settings, our suspension fork eats up everything in your path, assisted by Big Sur's 4" wide tires.

Fender & Rear Rack
An MIK HD rear rack comes standard, allowing for endless customization possibilities. Plus, fenders come pre-installed to ensure you're protected from below while riding in any weather conditions.

Flat Position Welding
AIMA has taken great care and utilized some of the newest aluminum welding techniques available on AIMA's frame, which comes with a lifetime warranty. These techniques allow the frame to maintain its structural rigidity while also appearing flat and smooth.

Walk Assist
Walk your bike alongside you, up a hill, or anywhere you need to with Walk Assist, which allows the bike to maintain a constant ~2-3mph based on your walking speed.

Controller Compartment
Big Sur's controller is mounted right near the pedals, allowing for easy access during repairs and maintenance. Plus, this mounting style allows the controller to utilize the entire frame as a heat sink, greatly improving safety and performance under load.


Recently viewed