E-Bike Model: F3 Pro Max Frame Material: High-strength steel pipe (stronger than alloy) Motor: Dual 750W (nominal), Dual 1000W (peak) Top Speed: 20 MPH Class (Off-road only mode: 35 mph) Battery: 48V, 54Ah (2,592Wh), UL certified Gears: Single gear Brake System: Front and rear hydraulic brakes Suspension: Full suspension (front & rear) Riding Range: 55–70 mi (pure electric), 70–103 mi (pedal assist) Tire Size: 20 x 4-inch fat tires Net Weight: 108 lb (49 kg) Max Load: 400 lb (180 kg) Packing Size: 55.1 x 13.4 x 33.9 inches (140 x 34 x 86 cm)