The Yokomo D-156UM is a front upper mount designed for the DPR series upper A-arm, providing six selectable pivot positions to change the upper link geometry. It suits RC drift package layouts and is compatible with the DP-DPRA and DP-DPRH chassis.
Moving the pivot alters the front roll center and link leverage in small increments, which changes steering bite and transient roll during cornering. Make adjustments one step at a time when tuning to find the balance between sharper initial turn-in and stable mid-corner traction.
Installation replaces the stock upper mount on the DPR upper A-arm and uses the chassis original mounting locations, so basic hand tools for removing the suspension link are sufficient. After fitting, check arm travel and steering clearance before running the car hard.
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