This is the Exotek DR10M Aluminum 3 Gear Gearbox with Motor Plate. Constructed using high quality 7075 aluminum this 3 gear gearbox offers the ultimate in durability and precision for your DR10M. Designed specifically to handle high amounts of power this gearbox rotates the motor around and uses one less idler gear like other traditional drag cars for use on higher grip surfaces. One less idler gear makes the transmission more efficient, quieter and translates to more rpm. The chassis will feel 'flatter' too when launching from a start. Package includes one left side gearbox half, one right side gearbox half and one motor plate.