Axial XR10 Heavy duty gear plate
New from Axial, the XR10 Heavy Duty Gear Plate is precision machined from durable billet aluminum and is 4mm in the heat-sink / motor mount area. The finned heat-sink design disperses heat faster due to increased surface area. The motor mounts directly to the 4mm heat sink section for both rock pounding durability and quick heat exchange for all day driving.
Source: Axial [axialracing.com]