This differential locker spool replaces the open differential in certain Traxxas models’ drivetrain with a solid-spool unit that locks both axle outputs together. By removing the normal differential action, both wheels on the axle turn at the same rate regardless of traction differences, which can improve straight-line acceleration, climbing ability, and traction in low-traction off-road conditions. The spool combines a steel shaft with a blue anodized 6061 aluminum gear hub for strength and corrosion resistance. It is typically used in off-road bashing or racing scenarios where a locked axle behavior is desired instead of standard differential gearing. Usage is recommended in appropriate applications only, as locked differentials affect handling on high-traction surfaces. • Steel output shaft with black oxide finish for durability • 6061 aluminum gear hub with blue anodized finish resists corrosion • Eliminates standard differential action for locked axle performance • Increases straight-line acceleration and traction in loose terrain • Fits Traxxas models that use the TRA5381 differential housing • Compact design (approx. 45 mm length) installs in differential case • Ideal upgrade for off-road acceleration and crawling applications
