Just released are the RPM upper chassis and diff covers for LaTrax Teton & Rally vehicles. These extremely tough aftermarket parts come molded in either blue or black.
The RPM Front and rear upper chassis and differential covers are designed for strength. Customers reported that the stock differential cover pivot ball mounts repeatedly break off. 
This is because the stock upper chassis is routed through the narrow groove between the pivot ball mount and differential bulge of the differential cover, leaving little support for that mount. They solved this by rerouting the upper chassis plates around the outside of the pivot ball mounts. With the upper chassis out of the way, RPM linked the pivot ball mount directly into the differential bulge. With a direct tie in, the extra support provides a much needed boost in strength and durability.
For more information, visit: RPM