Features1Heat Dissipation Function: The controller shell is made of aluminum alloy, which can preserve the internal circuit and has good heat dissipation to avoid thermal overload. 2Good Performance: The brush motor controller operates stably, has good performance, is not easy to damage, has a long service life, and does not need to be replaced frequently. 3Universal: This retrofit kit is applicable to DIY electric bikes, electric tricycles and electric motorcycles, with a wide range of applications. 4High Efficiency: This speed controller is made of circuit board, which is highly efficient and provides stable and sensitive speed control. 5Easy Installation: Easy to install, the instruction label on the interface for easy installation, the controller interface can be plugged in to realize the function.SpecificationItem Type: Electric Bike Controller Accelerator KitMaterial: Aluminum Alloy, RubberGross Weight: 636g / 22.4ozController Parameters:Rated Power: 350WPackage List1 x Controller1 x Pedal Accelerator