Upgrade your WLtoys 144001 with a high‑strength metal drive shaft for reliable power transfer and longer service life. - Function: transfers motor power to the drivetrain with minimal flex, improving torque handling and acceleration. - Material and durability: machined from a strong steel alloy for superior wear resistance and rigidity under high torque. - Compatibility and fit: designed as a bolt-on upgrade for WLtoys 144001, with standard mounting points for easy installation. - Performance benefits: smoother power delivery, reduced drivetrain play, and improved stability at speed and under load. - Use scenarios: - Indoor track racing: precise torque delivery through tight turns and quick starts. - Outdoor rough terrain: remains stable on gravel, grass, or uneven surfaces with less drivetrain flex. - High-speed runs on smooth surfaces: enhanced straight‑line stability and confident acceleration. This upgrade delivers a practical balance of function, compatibility, size awareness, and performance to support competitive driving and a more engaging ride.