RANGE
Up To 80 Miles*
BAFANG MOTOR
750W
SENSOR
Torque / Cadence
LG BATTERY
48V 20Ah
UL2849 Certification
2 Years Warranty
500+ Dealer Shops

Big Sur 2.0 Ebike

The Spirit of Big Sur. Reimagined.
Regular price
$1,999
Sale price
$1,999
Regular price
Color
Size
Test Ride at Nearby Shop
To ensure the best riding experience, we recommend booking an in-store test ride at our authorized dealer shops near you, where you can enjoy reliable and professional service and support.
RANGE
Up To 80 Miles*
BAFANG MOTOR
750W
SENSOR
Torque / Cadence
LG BATTERY
48V 20Ah
UL2849 Certification
WARRANTY
2 Years Warranty
500+ Dealer Shops
Big Sur 2.0 Ebike

The Spirit Of Big Sur. Reimagined.

Adventure meets intelligent exploration.

Built To Endure Built To Endure
See And Be Seen See And Be Seen
Big Sur U Bike

Big Sur 2.0 Geometry

Size
Regular
Large
Top Tube
611mm
611mm
Reach
377mm
377mm
Head Tube
160mm
160mm
Standover
470mm
470mm
Wheelbase
1201mm
1201mm
Overall Length
1950mm
1950mm
Min Saddle Height
811mm
861mm
Max Saddle Height
991mm
1041mm
Recommended Height
5'1" - 5'10"
5'3" - 6'3"

Adventure Has Evolved.

  • Ride Smarter.
  • Ride Farther.
  • Ride Big Sur.
Coastal Discovery
Coastal Discovery
National Park Ride
National Park Ride
Forest Escape
Forest Escape
Camping Weekend
Camping Weekend
Open Road Adventure
Open Road Adventure

Smarter Technology. Greater Freedom.

Intelligent features designed for modern exploration.

Powered By BAFANG
Powered By BAFANG

Integrated electronics for dependable performance.

Ride Your Way
Ride Your Way

Switch between Torque and Cadence modes.

Go Up To 80 Miles
Go Up To 80 Miles

Explore farther with lasting range.

Specifications

Motor
Rear Hub Motor, BAFANG, 750W
Peak Power: 1200 W | Max Torque: 85 N.m
Throttle
Throttle on Demand
Pedal Sensor
Torque / Cadence
Pedal Assist
5 PAS Levels
Speed
20/28 MPH  Up to 28 MPH Pedal Assist, 20 MPH Throttle Only
Display
C010 BAFANG E-system TFT Display (Find My, Sensor Selection Function)
Certification
UL2849
Shifter
Shimano 8 Speed
Rear Derailleur
Shimano 8 Speed
Cassette
8 Speed, 11-34T
Chain
8 Speed
Crankset
52T Chainring
Motor & Drivetrain
Battery
48V 20Ah
Cells
LG
Chargeing Time
About 7 H to a Full Charge
Range
Up To 80 Miles*
Lighting
Front Light/Rear Light/Intergrated Rear Turn Lights
Horn
Yes
Battery & Electrical
Frame
6061 Single-Butted Aluminum Alloy Frame
Fork
"ZOOM "Suspension Fork, with Lockout
Dimensions (L×W×H)
1950*680*1200 mm
Weight
82.2 lbs 37.3kg
Payload Capacity
400 lbs 181 kg
Kickstand
KickstandAluminum Alloy Kickstand
Pedals
 Alloy Platform
FRAME & SUSPENSION
detail
Brake
Tektro Hydraulic Disc 203 mm Brakes
Tires
26''*4.0
Rims
Double Wall Aluminum Alloy
Spokes
Black Stainless
Tubes
Butyl rubber
Front Hub
Aluminum Alloy Disc
BRAKES & WHEELS
detail
Saddle
AIMA Enlarged Comfort Saddle
Seatpost
Aluminium Alloy 30.9mm
Seat Clamp
34.9mm Quick Release
Stem
Threadless (Adjustable)
Handlebars
Aluminium Alloy 680mm
Grips
Ergonomic Comfort
Headset
Sealed Bearing Headset
Cockpit
detail

Your Next Adventure Starts Here.

Visit your local AIMA dealer and experience the next generation of Big Sur.

Rider reviews

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This cruiser-influenced fat-tire e-bike offers an easy, comfortable, highly customizable ride and great performance across the board.

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Frequently Asked Questions


The Big Sur 2.0 builds upon the original Big Sur platform with several
significant upgrades, including:

  • Larger 48V 20Ah (960Wh) battery
  • Updated BAFANG smart drive system
  • Torque and Cadence Sensor modes
  • BAFANG Go App connectivity
  • Apple Find My compatibility
  • Integrated navigation functionality
  • Enhanced ride customization options
  • Improved performance and extended range


These upgrades provide greater versatility, longer range, and a more
connected riding experience.

The Big Sur 2.0 is equipped with a high-capacity 48V 20Ah (960Wh) battery.

Actual range depends on rider weight, terrain, assist level, throttle usage,
weather conditions, tire pressure, and cargo load.

Under typical riding conditions, riders can expect up to 75 miles of range
on a full charge.


The Big Sur 2.0 features a removable 48V 20Ah (960Wh) lithium-ion battery integrated into the frame.

The battery can be charged either while installed on the bicycle or removed for charging indoors.

Yes.

The battery is removable and lockable for convenient charging,transportation, and storage.Alwaysuse the supplied charger or an approved replacement charger.

Under normal conditions, the Big Sur 2.0 battery typically requires approximately 7–8 hours to fully charge.

Charging time may vary depending on battery condition and ambient temperature.

The Big Sur 2.0 is powered by a 750W BAFANG rear hub motor designed to
provide strong acceleration, reliable hill-climbing capability, and smooth power delivery across a variety of riding conditions.

Yes.

The Big Sur 2.0 is equipped with a torque sensor and allows riders to
select between Torque Mode and Cadence Mode riding experiences.

Torque Mode provides motor assistance based on rider pedal effort for a more
natural feel, while Cadence Mode delivers a more relaxed riding
experience with consistent assistance.

This flexibility allows riders to choose the riding style that best suits
their preferences and conditions.

  • Navigation
  • Apple Find My setup
  • Call notifications
  • Text notifications
  • Ride records
  • Battery information
  • Display settings

Yes.

The Big Sur 2.0 allows riders to customize various ride settings through
the display and BAFANG Go App, including:

  • Pedal assist characteristics
  • Assist level behavior
  • Speed settings
  • Ride data tracking
  • Navigation features
  • Battery monitoring


Available functions may vary depending on software version and local regulations.

Yes.

The Big Sur 2.0 comes equipped with:

  • Integrated front headlight
  • Rear tail light
  • Brake light function
  • Turn signals
  • Electronic horn


These features help improve rider visibility and safety in traffic.

The Big Sur 2.0 is delivered as a Class 2 eBike with a top assisted speed of 20 MPH.

Depending on local regulations and dealer configuration, certain models may support Class 3 pedal-assist operation. Please contact your authorized AIMA dealer for details.

The Big Sur 2.0 is designed to support a maximum payload capacity of 400 lbs (181 kg), including the rider, cargo, and accessories.

The Big Sur 2.0 is designed to fit riders approximately 5'2" to 6'2".

Please visit your authorized dealer for a professional fit recommendation.

The Big Sur 2.0 is equipped with TEKTRO hydraulic disc brakes and oversized 203 mm brake rotors to provide strong and consistent braking performance.

Yes.

The Big Sur 2.0 is designed for mixed-terrain riding and performs well on:

  • Pavement
  • Gravel roads
  • Dirt paths
  • Light off-road trails


Its 26" × 4" fat tires and suspension fork provide excellent comfort, traction, and stability.

The recommended tire pressure range is printed on the tire sidewall.

For maximum efficiency on pavement, riders typically use higher tire pressures. For improved comfort and traction on dirt, gravel, or uneven terrain, lower tire pressures may be appropriate.

Always remain within the pressure range specified on the tire.

Because the Big Sur 2.0 uses large 26" × 4" fat tires and heavy-duty wheels, spoke tension should be inspected periodically.

AIMA recommends having spoke tension checked during routine service and after the first 100 miles (160 km) of riding.

If you notice loose spokes, wheel wobble, or unusual noises, contact your authorized AIMA dealer for inspection.

To help ensure safe operation and long-term reliability, Big Sur 2.0
owners should regularly inspect:

  • Tire pressure and tire condition
  • Brake pad wear
  • Brake rotor condition
  • Spoke tension
  • Crank arm tightness
  • Front wheel retention hardware
  • Chain lubrication
  • Suspension fork condition
  • Battery mounting and security


AIMA recommends having the bicycle professionally inspected by an authorized dealer after the first 100 miles (160 km) of riding and periodically thereafter.

Your first point of contact should always be your authorized AIMA dealer.

Authorized dealers are trained to diagnose and resolve most service and warranty concerns and can work directly with AIMA when additional support is required.

If you are unable to contact your dealer, please contact AIMA Customer Support: info@aimausa.com

The Big Sur 2.0 is backed by AIMA's 2-Year Limited Warranty covering defects in materials and workmanship under normal use and maintenance.

Warranty claims should be initiated through an authorized AIMA dealer.

AIMA provides warranty support through its dealer network, while certain service procedures, labor charges, and dealer-specific service programs may vary by dealer.

Please contact your authorized dealer for warranty-related assistance and coverage details.