RadExpand™ 5 Electric Folding Bike

The RadExpand™ 5 Electric Folding Bike is a purpose-built folding e-bike combining convenience, rugged utility, and portability. With its fat tires, strong drivetrain, compact folding frame, and 45-mile range, it's a versatile ride suitable for carrying gear or commuting. At ~62 lb, it's lighter than previous Rad folders, but still hefty to carry—best folded into a vehicle or storage space rather than lugging long distances by hand.

Specifications

• Motor: 750 W rear-geared hub, ~64 Nm torque; actual output regulated under 750 W for legal compliance
• Battery: 48 V, 14 Ah (672 Wh) external Safe Shield pack; UL‑2271 & UL‑2849 certified
• Range: Up to 45 miles (25–45 mi in real-world use)
• Top Speed: 20 mph (Class 2 throttle & PAS)
• Pedal Assist: Cadence-sensor with 4 PAS levels + zero-assist
• Throttle: Half-twist grip
• Display: Basic LED display (PAS level, battery); no USB port
• Charger: 48 V, 2 A smart charger; supports 100–240 V AC (~6 hr full charge)

• Frame: 6061 aluminum, step-through folding design
• Weight: ~62.5 lb with battery, ~54.8 lb without
• Payload Capacity: 275 lb total (rider + cargo); rear rack holds up to 59 lb
• Folded Size: ~29″ H × 25″ W × 41″ L

• Wheels & Tires: 20″ wheels with 4.0″ CST BFT fat tires (puncture-resistant, reflective sidewalls)
• Fork: Rigid steel, 135 mm hub width, 9 mm quick-release
• Drivetrain: 1×7 Shimano/MicroShift (48 T chainring, 14–32 T cassette)
• Brakes: Mechanical disc brakes, 180 mm rotors (motor cutoff levers)

• Racks & Fenders: Integrated rear rack (59 lb capacity); full front & rear fenders included
• Lighting: Auto-on LED headlight; integrated LED taillight with brake light
• Handlebars & Seat: 27″ alloy bars with ergonomic grips; adjustable; comfort saddle with carry handle
• Kickstand & Bell: Heavy-duty side kickstand; bell included

• Rider Height: Designed for 4′10″–5′10″ (inseam approx. 24.5″–32.3″)
• Key Dimensions:
  
  • Reach: ~16″
  • Wheelbase: ~45″
  • Seat Height: 29–36″ (ground) / 24–31″ (pedal stroke)
  • Standover: ~16″