Speed Differential - Enhances etrike's performance and maneuverability, ensuring safe turning and cornering. Torque Sensor - A torque sensor matches your pedaling effort, making the ride more efficient and comfortable. Parking Brake - The new parking brake system locks the wheels, allowing you to stop or park with confidence anywhere. Front Shock Absorber - ADDSHOX suspension enhances comfort, stability & control, reduces fatigue, and improves traction. EB 2.0 Versatile Lights - A 5-in-1 taillight w/ driving, danger, flashing, braking, and turning signals. Plus, a headlight for your safe ride. Rear Cargo Basket & Bag - Grandtan includes a rear basket and a waterproof bag to store items and ensure safe night rides. Thumb Throttle - Ride your etrike easily with thumb throttle. Dual Suspensions - GRANDTAN X trike redefines comfort on three wheels with its dual shock absorption system, featuring Addshox front suspensions and rear spring shock absorbers. It efficiently absorbs vibrations and bumps for a smooth, enjoyable ride. UL-Certified Samsung Cell Battery - The 48V*20Ah high-capacity battery provides plenty of power with a range of up to 135 KM. The UL-certified battery in the US and Canada keeps your ride safe and secure. 500W Rear Motor - The rear-mounted motor makes the Grandtan much more stable and helps maintain a better balanced ride when climbing hills.