Speed Control (Rear) - D4+ 2.0 (New Generation) 3.0, 4.0

Replacement Rear Electronic Speed Controller (ESC) for Nanrobot D4+ 2.0 (New Generation) and D4+ 3.0 Electric Scooters Maintain peak rear motor performance with this OEM-spec rear speed controller for the Nanrobot D4+ 2.0 (New Generation) and D4+ 3.0 scooters. This ESC regulates power to the rear motor, supporting smooth throttle response, balanced acceleration, and reliable riding control. To ensure compatibility, check your wheels:If your wheels have "RoadRunner Scooter" engraved on them, this is the correct ESC model. If there is no engravement, you may need a different controller. Please contact RoadRunner Scooters for assistance before ordering. Each controller sold separately. Features: Compatible with Nanrobot D4+ 2.0 (New Generation) and D4+ 3.0 models Controls power delivery to the rear motor OEM-grade component for reliable fit and operation Ensures consistent acceleration and rear-wheel performance Fitment Tip: Choose this model if wheels show "RoadRunner Scooter"