MST Alum. ATK V3 Upright - BlackMST (#820162BK) Alum. ATK V3 Upright Black Features: For: Universal Parts All new 3rd generation steering upright, specially designed for RWD drift cars! Precision CNC machined, extremely lightweight design. The Ackermann setting is oriented to provide quick response and agile control in the initial phase of steering. In the later phase of significant steering, it can withstand larger drifting angles, enabling stable control of high angle drifts.