Part #: ST8251BK
CNC Machined Alum. Portal Drive Outer Housing (1 pair) front or rear for Traxxas TRX-4 (BK) The outer protal Drive housing provides more precision for the portal drive transmission gears and also provide more weight lower to the ground.
STRC Traxxas TRX-4 Aluminum Portal Drive Outer Housing (2) Black - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available.