RX Aluminum Alloy is a lightweight retro fat tire electric bike. It is fitted with a standard 48V 400W motor, and users can upgrade it to 1000W for stronger power output. It supplies multiple 48V lithium battery versions: 13Ah, 18Ah, 25Ah and 32Ah, covering different mileage needs from 20km to 120km. The whole frame is made of aluminum alloy, which reduces the overall weight effectively, net weight is only 33.2kg. It is equipped with 20*4.5 Kenda fat tires, matched with cavalry inverted front fork and rear spring shock absorber for comfortable off-road riding. It adopts SW900 NFC meter to display riding data clearly. The brake system is Starling hydraulic brakes on front and rear wheels for stable braking performance. Max load capacity is 200kg. Limited speed is 25km/h, and the top speed reaches 40km/h after unlocking. Max climbing angle is 30°, maximum mileage is 20–120km depending on battery capacity. Color options: black, white, cyan, alloy red, desert color. Custom color service is available. It is equipped with LED headlight, taillight and brake light. Charger: 48V 2A / 3A, charging time 6–10 hours. Body size: 17363109cm. Packing size: 1723294cm; size after removing front wheel: 1443487cm. Packing weight: 5.9kg.