ARRMA Metal Slipper & Input Gears Upgrade Set: BOOST BOX HO Track *Due to customs policy

*Due to customs policy

more compact

The cockpit has been meticulously reproduced down to the last detail

The charger firmware is highly optimized by displaying the battery voltage with three decimals during the process of charging & battery voltage measuring

The built-in 6-axis gyro software control system provides amazing stability

ARRMA Metal Slipper & Input Gears Upgrade Set: BOOST BOX HO Track *Due to customs policyIntroduction ARRMA makes it easy and affordable for drivers of ARRMA 4X2 BOOST, MEGA, or 3S vehicles to continue on the path to higher and higher levels of performance for example, by upgrading the transmissions with even greater durability using the ARRMA Metal Slipper and Metal Input Gears BOOST Box upgrade package. Its strong metal gears give your transmission the additional toughness needed for stepping up to higher speed, higher performance