Tamiya 84226 RC TB-03 VDS Front One-Way Set

By replacing the kit-standard front ball differential with this Front One-Way Set, the default full-time 4WD setup becomes a part-time 4WD setup (freewheel when throttle is off) which helps maintain speed during cornering. This One-Way Set can be used for both drift and standard driving conditions, giving you expanded setting possibilities to handle your driving conditions and needs.