The Yokomo D-154-27A adapter is a steel 27mm unit (excluding thread) aimed at improving repeatability when setting lower A arm lengths. The D-shaped seating surface plus a visible scale allows precise adjustments so both sides sit at the same effective length during setup.
This adapter fits a number of Yokomo YD platforms including DP-YD2, DP-YD2G, DP-YD2PLS and DP-YD2EX. It is suited for routine rebuilds or when you want a clear reference for short arm geometry on race cars.
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