The AIMA Big Sur Sport 2.0 pairs a low-step aluminum frame with 20×4-inch fat tires, a 750W Bafang rear-hub motor and a removable 48V 20Ah battery. For Tampa Bay riders considering this model, fit and everyday handling deserve as much attention as the motor and battery specifications.
This guide uses AIMA and Tampa Bay eBikes specifications checked on October 16, 2026. It covers the dimensions, components and questions to bring to a showroom fit check in Tampa, St. Petersburg or Dunedin.
Step-Through Frame and Rider Geometry
The single-butted 6061 aluminum frame has a step-through layout for a lower step-over. AIMA lists a 16.81-inch standover height, a 31.18-inch minimum saddle height and a 69.69-inch overall length. Check these measurements against your reach, inseam and storage space.
The shop currently lists the bicycle in Sage Green as a one-size platform recommended for riders between 5’0″ and 6’3″. That suggested height bracket serves purely as an initial baseline rather than an exact sizing guarantee. Individual proportions such as torso length, arm reach, and inseam strongly influence posture and steering leverage.
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Ask the shop to check comfortable mounting, handlebar reach and appropriate leg extension while pedaling. Also practice stopping and placing a foot securely on the ground. The listed height range alone cannot establish an individual fit.
Weight Considerations and Payload Clarity
AIMA lists the bike at 77.2 pounds. The frame does not fold, so plan how you will move it through doors, store it and lift it if necessary. For vehicle transport, verify the carrier’s per-bike weight limit and compatibility with the bike’s tire width and wheelbase.
The 20×4-inch tires and 69.69-inch overall length are worth considering when measuring a hallway, shed or garage space. If your storage requires stairs or frequent lifting, assess that task before buying.
AIMA publishes a maximum total payload rating of 400 pounds. This figure represents the combined weight of the rider, riding gear, onboard accessories, and cargo; it does not indicate rear-rack cargo capacity or passenger-carrying approval.
Bafang Hub Motor and Sensing Modes
A 750W Bafang rear-hub motor supplies assistance. Riders can select torque sensing, which responds to pedal pressure, or cadence sensing, which responds to pedal rotation. Five pedal-assist levels provide another way to adjust assistance.
The Shimano 7-speed drivetrain uses a 52T chainring and an 11–28T cassette. AIMA lists a C010 Bafang TFT color display and Apple Find My support. Ask the shop to demonstrate the display and compatible tracking setup; tracking support does not replace a physical lock.
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- Torque sensing responds to the pressure applied to the pedals.
- Cadence sensing responds to pedal rotation.
- Speed specifications differ between sources: AIMA lists a 20 mph limit, whereas shop documentation notes approximately 20 mph throttle and 28 mph pedal assist.
- Riders should confirm the specific delivered assistance configuration directly with the shop prior to purchase.
Removable Battery and Practical Range Planning
AIMA specifies a removable 48V 20Ah battery with LG cells. Multiplying the listed voltage and amp-hour capacity gives 960Wh. Follow the supplied charging and storage instructions, and ask the shop to demonstrate battery removal and refitting.
Advertised range estimates vary across published sources: AIMA lists up to 80 miles, while the shop notes an estimated range of 40 to 75+ miles. These figures represent manufacturer and retailer estimates rather than local Tampa Bay standardized testing. Real-world travel distance changes based on payload, assist level, rider pedaling input, wind exposure, and tire pressure.
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Riders planning longer itineraries along flat coastal corridors should maintain an energy buffer. Operating at higher pedal-assist settings or against strong coastal headwinds increases energy draw, making conservative route planning practical.
Suspension, Braking, and Visibility Hardware
The bike has a Zoom front suspension fork with lockout; the shop lists 80mm of travel. There is no rear suspension shock. Ask the shop to demonstrate the fork settings during your fit check.
Tektro hydraulic disc brakes use 203mm rotors. The equipment list also includes a headlight, taillight, integrated rear turn signals and a horn. Check how the controls work before a ride.
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Hardware Strengths
- Tektro hydraulic disc brakes with 203mm rotors.
- Integrated rear turn signals and a horn.
- Zoom front suspension fork with lockout.
Usage Boundaries
- Rigid rear frame with no rear suspension shock.
- Avoid riding through standing water; follow the manufacturer’s care instructions.
- Fat tires do not establish beach suitability or permission to ride a particular trail.
Specifications and Practical Pre-Ride Planning
Use these published specifications as a starting point for a fit and handling check.
| Feature | Details |
| Frame Type | 6061 aluminum alloy step-through structure |
| Standover Height | 16.81 inches for accessible mounting |
| Saddle Height | 31.18-inch minimum height from ground to saddle top |
| Overall Length | 69.69 inches total footprint tip to tail |
| Total Weight | 77.2 pounds as listed by manufacturer |
| Payload Limit | 400 pounds total including rider and all cargo |
| Motor Drive | 750W Bafang rear hub with 5 assist levels |
| Sensor Modes | Selectable torque-sensing or cadence-sensing operation |
| Battery Size | 48V 20Ah removable pack yielding 960Wh capacity |
| Brake System | Tektro hydraulic disc calipers with 203mm rotors |
| Suspension | Zoom front fork with lockout and 80mm listed travel |
| Tire Size | 20×4-inch fat tires |
Pre-Purchase and Test-Ride Checklist
Try mounting and dismounting, then have the saddle adjusted for pedaling. Check handlebar reach and practice a controlled stop with secure foot placement. Standover height and minimum saddle height describe different aspects of fit.
During a suitable test ride, assess steering, braking and assistance controls at a comfortable pace. Before bringing the bike home, measure storage access and verify any vehicle carrier’s weight and tire-size limits.
Confirm Showroom Inventory and Test-Ride Timing
Pricing and model availability are subject to change. Contact the team directly to check current floor displays, color availability, and scheduled appointments across Tampa Bay.
Frequently Asked Questions
What height range does the shop recommend?
The listed rider-height range is 5’0″ to 6’3″. Treat it as a starting point. Check mounting, reach, pedaling leg extension and secure foot placement at stops with the shop.
How much does the bike weigh?
AIMA lists 77.2 pounds. Plan for storage and lifting, and check the per-bike weight limit and dimensional compatibility of any vehicle carrier.
What does the 400lb payload figure mean?
The 400-pound payload rating represents the total allowable weight of the rider, riding gear, accessories, and cargo combined. It is not an individual rating for a rear cargo rack or a passenger rating.
What range should a Tampa Bay rider expect?
Published estimates vary from 40 to 75+ miles from the shop and up to 80 miles from AIMA for the 960Wh battery. Real-world distance changes with rider weight, assist levels, wind conditions, and tire pressure, making an energy reserve sensible.
Which speed figure should a buyer rely on?
AIMA specifications list a maximum assisted speed of 20 mph, whereas shop product literature notes approximately 20 mph on throttle and 28 mph on pedal assist. Buyers should ask the shop to confirm the delivered assist configuration on their specific unit.
Can a rider test or view the exact model locally?
Local showroom availability and test-ride units change regularly across locations. Riders must call ahead to verify current showroom inventory and schedule a hands-on fit check.
Next Steps for Prospective Riders
The Big Sur Sport 2.0 brings selectable torque or cadence sensing, a 960Wh battery and a low-step frame to a 20-inch fat-tire format. A useful showroom visit should establish whether its fit, 77.2-pound weight and storage footprint work for your routine.
Specifications are documented from the official AIMA Tech Big Sur Sport 2.0 Product Page and verified through Shop AIMA Big Sur Sport 2.0 as of October 16, 2026. The retailer currently lists this model at $2,099 in Sage Green, subject to change.
Connect With a Tampa Bay Showroom
Call ahead to confirm model and color availability and arrange a fit check at a convenient location:
- Tampa Showroom: 4004 S MacDill Ave Unit 6, Tampa FL 33611
- Dunedin: 376 Patricia Ave, Dunedin FL 34698
- St. Pete: 4116 S 8th Ave Unit B, St. Petersburg FL 33711