AIMA Santa Monica vs Big Sur Sport 2.0 in Tampa Bay: Which Fits Your Ride?

Choosing between the AIMA Santa Monica and Big Sur Sport 2.0 starts with fit, storage and how you want pedal assistance to respond. The Santa Monica pairs 27.5-inch wheels and torque sensing with a lower published standover. The Big Sur Sport 2.0 combines 20-inch fat tires, selectable sensing modes and a larger 960Wh battery. Try both before choosing.

Tampa Bay eBikes lists both at $2,099 as of October 18, 2026; prices can change. For riders in Tampa, Dunedin and St. Petersburg, a useful comparison starts with handlebar reach, low-speed control and the space available at home.

What Both Bikes Share

Both bicycles share a foundation built on single-butted 6061 aluminum alloy nonfolding frames with step-through geometry. Each uses a 750W Bafang rear-hub motor paired with five pedal-assist levels, an on-demand throttle, and a front suspension fork with mechanical lockout. Stopping power on each platform is handled by Tektro hydraulic disc brakes operating on large 203mm rotors, supported by integrated front headlights, rear turn signals, and an electric horn.

Each model uses a removable 48V battery built with LG cells that can be charged on or off the frame. Both frames carry an identical manufacturer total payload rating of 400 pounds. This figure reflects the total allowable weight of the rider, personal riding gear, and mounted cargo combined; it is not an individual rating for an accessory rear rack and does not grant passenger-carrying permission.

AIMA’s specification pages list 20 mph, while the shop descriptions list approximately 20 mph on throttle and up to 28 mph with pedal assistance. Ask staff to confirm the delivered configuration before purchase. These figures do not establish access permission for a particular path or trail.

Santa Monica: Wheels and Fit

The Santa Monica has 27.5×2.6-inch tires and torque sensing that responds to pedaling effort. Its Shimano 8-speed drivetrain uses an 11–34T cassette and a 52T chainring. A Bafang C270 TFT display shows riding information; the SR Suntour suspension fork has 75mm travel and lockout. Assess the steering and pedal response on a test ride.

The removable 48V 15Ah battery has a nominal 720Wh capacity, calculated as volts × amp-hours. AIMA lists up to 60 miles; actual range varies with assistance, payload, wind, terrain and tire pressure. AIMA lists 62 pounds, while the shop lists approximately 64 pounds. Check the weight of the actual equipped bike before planning to lift it.

Manufacturer geometry specifies an overall length of 75.98 inches, a low 15.71-inch standover height, and minimum saddle heights of 30.71 inches on Regular and 32.68 inches on Large. Manufacturer height recommendations span 5’1″ to 6’2″ for Regular and 5’5″ to 6’3″ for Large, whereas shop inventory categories describe Small (4’9″ to 5’7″) and Medium (5’7″+). Riders must not equate manufacturer size labels directly with shop sizing names; evaluating physical handlebar reach and leg extension in person remains essential. Available shop finishes include Matte Black, Ivory White, and Metallic Blue, though color availability varies over time.

Review the comprehensive AIMA Santa Monica step-through ebike guide and consult the official AIMA Santa Monica specifications before booking a test ride.

Big Sur Sport 2.0: Tires and Battery

The AIMA Big Sur Sport 2.0 (distinct from the standard Big Sur 2.0) is configured with 20 x 4-inch fat tires on a compact chassis. A primary feature is selectable sensor programming, allowing riders to switch between cadence sensing for steady motor output upon crank rotation and torque sensing for effort-matched assist. Pedaling gears feature a Shimano 7-speed transmission with an 11–28T cassette and a 52T chainring. Damping is handled by a Zoom suspension fork with lockout, listed by the shop with 80mm of travel, while the cockpit features a Bafang C010 TFT display with Apple Find My support that requires initial setup and does not replace physical locking security.

AIMA Big Sur Sport 2.0 in Sage Green displaying the compact low-step chassis and wide 20×4-inch tires.

The Big Sur Sport 2.0 has a removable 48V 20Ah battery: nominally 960Wh. That is 240Wh, or 33.3%, more energy than the Santa Monica’s 720Wh pack. It does not guarantee 33.3% more range. AIMA lists up to 80 miles and the shop lists 40–75+ miles; these are estimates, not results from a local comparison test. Range depends on payload, assistance, terrain, wind and tire pressure. AIMA lists the bike at 77.2 pounds.

Frame dimensions include an overall tip-to-tail length of 69.69 inches, a standover height of 16.81 inches, and a minimum saddle height of 31.18 inches. The platform uses a single frame size with manufacturer height guidance spanning 5’0″ to 6’3″, which serves strictly as a starting baseline rather than a fit promise. Riders must assess arm reach to the handlebars, knee clearance, and foot placement at stops directly in the showroom.

Read the detailed AIMA Big Sur Sport 2.0 fit and feature guide and review the official AIMA Big Sur Sport 2.0 specifications to prepare for an in-person assessment.

What to Compare on a Test Ride

Directly comparing rider geometry reveals that wheel size alone does not determine mounting clearance or frame height. Despite having smaller 20-inch wheels, the Big Sur Sport 2.0 has a published standover height of 16.81 inches and a minimum saddle height of 31.18 inches. In contrast, the Santa Monica with 27.5-inch wheels features a lower standover height of 15.71 inches and a minimum saddle height of 30.71 inches in its Regular frame size.

AIMA Santa Monica in Matte Black, rear three-quarter view.

During a permitted test ride, compare starting, slow turns, stopping and moving the bike by hand. Check whether you can reach the brake levers comfortably and use the controls without changing your grip awkwardly. Try the Big Sur Sport 2.0’s torque and cadence modes with staff guidance. Specifications cannot tell you which response you will prefer.

Storage and Transport

Physical footprint and total weight dictate how easily each bicycle fits into residential living spaces or onto vehicle racks. The Big Sur Sport 2.0 measures 69.69 inches in overall length, making it roughly 6.29 inches shorter than the 75.98-inch Santa Monica when navigating tight elevators, storage sheds, or narrow hallways. However, the Big Sur Sport 2.0 weighs 77.2 pounds from the factory, making it roughly 13 to 15 pounds heavier to lift than the 62-to-64-pound Santa Monica.

AIMA Big Sur Sport 2.0 front angle displaying the suspension fork and wide 20×4-inch tire profile.

Before loading either bike, check the carrier’s permitted bike weight, wheelbase, tire width and attachment method. Ask whether the Big Sur Sport 2.0’s 4-inch tires fit the carrier as supplied or require approved accessories. Check the equipped bike’s weight and follow the bike and carrier makers’ battery-removal and transport instructions.

Key Differences

Evaluating verified factory specifications highlights the hardware divergence between these two step-through platforms.

Call-Ahead Showroom Comparison Checklist

Floor inventory and demo unit availability change across regional storefronts. Prospective buyers should call ahead to confirm that both models are assembled and available for side-by-side evaluation prior to traveling.

• Call 727-228-1975 to ask which location has both models available to compare.
• Confirm which physical frame size and cockpit configuration are assembled for the Santa Monica.
• Assess low-speed turning, pedal response, and throttle modulation on a permitted test ride.
• Compare reach to handlebars, minimum saddle height, and foot stability when stopping.
• Inspect standover clearance directly by standing flat-footed over the frame tube.
• Check Apple Find My display setup on the Big Sur Sport 2.0 and confirm delivered speed configuration on both bikes.
• Measure residential storage clearances and confirm vehicle hitch rack compatibility for tire width and total weight.
• Verify current $2,099 shop pricing and on-hand color selection, noting that floor stock is never promised without direct confirmation.

Tampa Bay eBikes has three showrooms. Call ahead to ask about model availability and a fit check:

• Tampa Showroom: 4004 S MacDill Ave Unit 6, Tampa, FL 33611
• Dunedin Showroom: 376 Patricia Ave, Dunedin, FL 34698
• St. Petersburg Showroom: 4116 S 8th Ave Unit B, St Petersburg, FL 33711

Frequently Asked Questions

Selecting Your AIMA Electric Bicycle

Evaluating the AIMA Santa Monica and Big Sur Sport 2.0 in person clarifies how wheel geometry, sensor responsiveness, and total weight influence your daily riding routine. Scheduling a side-by-side fit check across Tampa Bay showrooms allows riders to confirm mounting clearance, steering feel, and storage compatibility before deciding.