Kyosho MZW405 Mini-Z Gyrounit automatically detects and corrects throttle and steering imbalance for improved driving stability. It easily integrates with your Mini-Z Racer MR-03 and doesn't require any complicated programming or adjustments. Once installed, the gyro unit enhances your RC car's handling, making it easier to control and more responsive. With standard settings that work great out of the box, the gyrounit also offers advanced customization options through a USB adapter (sold separately) for fine-tuning its behavior.