This is an optional Exotek DR10 Lightweight Motor Plate.
V2 lighter, no gear cover mounting.
100% cnc machined and vented motor plate. Aggressive slot cuts for less weight that also helps lower the motor temps faster. The slots also help cool down the inner slipper parts by letting cooler air pass through.
The extra machining brings the weight down to 13gr (7 grams lighter than stock) but the critical motor mounting areas are still intact to minimize flex for solid motor mounting and gear mesh.