These GPM MJ008 gear box components are precision engineered aluminium replacements intended to strengthen the AXIAL SMT10 drivetrain under high load. They are compatible with the AXIAL-SMT10 GRAVE DIGGER AX90055, AXIAL-RR10 BOMBER, AXIAL-WRAITH 4WD ROCK RACER, and AXIAL-YETI ROCK RACER and integrate with original or aftermarket gear boxes to improve durability and reduce wear on critical gearbox interfaces.