Samix TRX-4 brass rear portal drive housings
Made for the Traxxas TRX-4 trail truck is a new brass rear portal drive housing set from Samix. Adding 65g of weight a pair, the CNC-machined brass housings add valuable weight as well as stability, ensuring better climbing performance while adding strength to the portal axle assembly. The housings come black coated for wear and looks and they are compatible with the standard Traxxas parts.
Source: Samix [rcsamix.com]