37 outer shock-absorbing springs, with 375-12 inch tires at both the front and rear, cast steel connecting plates, steel door cores, steel floor plates, 160 integrated automatic transmission rear axle, 48-60V 18 tube-type double-row controller, 1000W (45H) motor, 7.5 kg leaf spring, external embossed pattern, dual horns, single-foot three-brake system, four cross beams.