Spokes: Steel, 12G×2.6mm. Max load capacity: 100kg (36V250W). Max load capacity: 150kg (36V500W). Max load capacity: 200kg (48V1000W). Max load capacity: 250kg (48V1500W). Rim: Alloy double wall. Key feature: Built to the highest international standards Nylon tire& alloy rim& stainless steel spoke (Fat Tire without Nylon tire) Aluminum alloy powerful controller guarantee big current supply Twist throttle has battery level and power-cut off LCD display shows battery level and pedal assistance settings (only for 48V1000RC) Brake Levers cut off the power supply to the motor safely 8 point Crank speed sensor for pedal assist Aluminum alloy powerful controller. Upgraded Intelligent Motor Controller:For 48V1000WR? Allow you to swap two power modes between the full 1000W power or 250W power by a single blue switch wire is embedded in controller. (Only for Twist Throttle). Still remain the full 1000W power with no speed control. (Only for Pedal Assist System, “PAS”). The 250W 500W system requires a 36 Volt electrokinetic cell battery with a nominal capacity not less than 8.8Ah. The 1000W system requires a 48 Volt electrokinetic cell battery with a nominal capacity not less than 11.6Ah. Battery and charger are not included in package. The UK regulations dictate that a kit must not exceed the rated power of 250W to be road-legal. Caution: For your Safety, Please turn off the battery before connecting the Controller! Our warehouse is located in UK! Our company is one of UK’s fastest growing online retailers, which was founded in 2005 and target worldwide market. With our best effort, we are now trusted by more than 30,000 customers nationwide. We are dedicated to offering you an unrivalled choice of products with unbeatable low price and best quality. Directly sourcing from the manufacturers, you will be able to save up to 80% off retail price. Our massive warehouse of 4,000 sq metres located in Leicestershire, buyers can get your items real quick. Special circumstances will be listed clearly in the listing. Designated trademarks and brands are the property of their respective owners.