The AIMA Big Sur is a fat-tire all-terrain electric bike (e-bike) designed for commuting, paved roads, gravel paths, and dirt trails.
Key Specifications & Features
• Motor: 750W Bafang rear hub motor (peaking higher on certain builds like the Big Sur U or Sport variants) delivering around 80–85 Nm of torque. • Battery: 48V (with options ranging around 15Ah to 20Ah / up to 960Wh) using LG 21700 cells. • Speed & Class: Ships as a Class 2 e-bike with a 20 MPH top speed via throttle or pedal-assist, and can be configured/unlocked by authorized dealers to Class 3 (up to 28 MPH with pedal-assist). • Tires & Wheels: Large 26" × 4" fat tires (or compact 20" × 4" fat tires on Sport models) with aggressive tread for traction. • Drivetrain & Brakes: Shimano Altus 8-speed derailleur, 52T chainring to prevent ghost pedaling, and Tektro hydraulic disc brakes with large 203mm rotors. • Sensors: Features a responsive torque sensor (plus cadence-sensing options) for natural or assisted power delivery. • Safety & Certifications: Full UL2849 certification, integrated large headlights, tail lights, and a sturdy rear luggage rack.
