SUPER73-B1G SE Electric Bike – High-Performance 52V Full-Size Fat Tire Cruiser (A-Series)

Product Overview

The Flagship Alpha of the A-Series Lineup The SUPER73-B1G SE is built for those who refuse to ride small. As the largest framework in the brand’s revolutionary A-Series ecosystem, the B1G eliminates the cramped, low-slung feel of traditional mini-utility bikes by offering a commanding 33-inch seat height. Constructed around an ultra-rigid chassis utilizing heavy-duty thru-axle architecture, it offers incredible tracking stability, superior frame rigidity, and maximum ground clearance for taller riders dominating the urban grid.

Uncompromising Power & Expandable Range To back up its massive footprint, the B1G SE features a high-performance 750W nominal hub motor linked to an advanced 52V electronics system. This setup delivers immediate throttle response, heavy off-the-line torque, and effortless hill climbing. Tucked safely beneath the premium flip-up bench seat is an internal lockable storage compartment housing a large 780Wh primary battery, with pre-engineered room to add a second modular battery (sold separately). Ride on a single battery for your daily hustle, or dual-load it to instantly double your capacity for long-distance cruising.

Elite Special Edition Components The Special Edition classification guarantees that this full-size machine is outfitted with the absolute best hardware available. To iron out harsh city potholes, tracks, and curb drops, the B1G SE features an adjustable front suspension fork that provides an incredibly smooth, controlled front end. Managing its substantial momentum is an elite set of heavy-duty 4-piston hydraulic disc brakes, delivering massive thermal dissipation and crisp stopping power with minimal hand effort. The aggressive look is finished off with premium, oversized Maxxis SuperSucker street fat tires (4.5″ front, 5″ rear), ensuring maximum rubber-to-asphalt contact and stable, deep lean angles through every corner.

SPECIFICATIONS & PERFORMANCE BREAKDOWN

⚡ Performance & Electronics

• Motor: 750W nominal rear hub motor (tuned for maximum torque output to effortlessly pull a full-size frame).

• Top Speed: Limited to 20 MPH out of the box (Class 2 compliance with an on-demand thumb throttle).

• High-Voltage Battery: Powered by a high-capacity 780Wh (52V 15Ah) lithium-ion battery pack. Fully UL2271 compliant to meet modern global safety and charging standards.

• Range (Single vs. Dual Battery):

  • Single Stock Battery: Delivers an urban-ready 25–30 miles of real-world range under standard 20 mph throttle operation.

  • Dual Battery System: Features a modular under-seat bay built to house a second modular battery (sold separately) to instantly double your range to 50–55 miles.

• Gearing: Pure Single-Speed drivetrain. This design keeps mechanical maintenance at zero, relying entirely on the high-torque hub motor and thumb throttle to do the heavy lifting.

• Display System: Includes the updated A-Series digital smart display, providing clear, real-time readouts for battery life percentage, current speed, estimated remaining range, and pedal-assist level.

• On-The-Go Charging: Includes dual USB-C charging ports hidden safely inside the seat compartment to keep your mobile devices or action cameras charged while riding.

• Charge Time: 6–7 hours to a full charge.

🛠️ Key SE (Special Edition) Upgrades

Choosing the B1G Special Edition over the base Core platform steps you up to premium, heavy-duty componentry:

• Adjustable Front Suspension Fork: Replaces the standard rigid front end with an adjustable front suspension fork to swallow up harsh impacts and rough roads.

• Elite 4-Piston Hydraulic Brakes: Upgraded from standard 2-piston setups to heavy-duty SUPER73 4-piston hydraulic disc brakes for crisp, immediate stopping power and zero brake fade.

• Maxxis SuperSucker Tires: Outfitted with massive Maxxis SuperSucker fat tires (4.5″ front / 5″ rear) featuring a high-traction, wrap-around street dimple pattern for maximum cornering grip.

• Exclusive Trim Finishes: Available in premium, high-end Special Edition colorways—namely Baja and Blackout.

📐 Dimensions, Weight & Fit

• Seat Height: Fixed 33″ seat height. This is the tallest and largest frame profile in the A-Series line (positioned above the 27″ MZFT and the mid-size 30″ M1D).

• Recommended Rider Height: Form-factored specifically to comfortably fit taller riders between 5’7″ and 6’7″.

• Rider Weight Limit: Supports up to 250 lbs max.

• Vehicle Weight: 92 lbs (fully assembled with the larger 780Wh battery pack, full-size frame, and front suspension fork).

• Lighting & Horn: Factory-integrated high-output LED headlight, rear LED tail/brake light, and a handlebar-mounted horn.