4-inch Grip Tires Wide tires provide greater surface contact with the ground, improving stability and traction. Easily traverse a variety of terrain types, including loose surfaces like sand, mud and gravel, as well as rocky or uneven trails. Removable Battery With a removable and efficient battery design, a single charge can provide a 65km pure electric range or up to 130km assisted range, safeguarding your long-distance travel. Battery Capacity: 48V 15Ah Range (Tested by a 75KG rider on a flat road): 55-110KM Mechanical Disc Brake It provides superior braking performance and durability, which guarantee a safety riding. Shock Absorber System The combination of adjustable front suspension, rear spring shock absorber, effectively reduces bumps and vibrations across uneven surfaces, maintaining comfort and control even on demanding trails. Brushless Hub Motor The RS-A02 Pro features a 250W motor and strong-grip fat tires, effortlessly tackling steep hills (up to 20°), rough terrain, and challenging urban or off-road conditions while delivering stable performance.