MST RMX 2.0 alum. spur gearbox set (black)

The MST RMX 2.0 Aluminum Rear Gearbox Set is an optional upgrade for RMX 2.0 and RRX 2.0 models. It is designed to provide more precise alignment of the internal gears, helping decrease drag and increase durability.

Made from lightweight aluminum with a black anodized finish, this gearbox set includes two gearbox halves, two stickers with shims, and hardware.