This 3V 1250 RPM DIY RC modification part adds deceleration and an electronic starter to your builds, delivering smoother starts, controlled deceleration, and easier tuning. Key benefits: - Improved control: deceleration provides gradual slowing and precise throttle response for better handling on tracks and varied terrain - Flexible mounting: double output shaft design supports different chassis layouts and gear configurations - Broad compatibility: designed for 3V systems and 1250 RPM motors, suitable for many RC car models - Compact integration: small footprint fits in tight spaces with minimal modification - Reliable performance: electronic starter simplifies power management during setup and testing Practical applications: - Upgrade an older or budget RC car for smoother starts and controlled braking - Add to a DIY micro car project to test different gear ratios and mounting options - Use as a modular starter/deceleration module in custom builds that require two drive outputs Notes: - Verify your model voltage and motor class align with 3V and around 1250 RPM - Ensure the double shaft configuration matches your chassis