This adapter is an RC-scale caster pointer accessory designed to let you check caster angles accurately on XRAY X20 and X23 chassis. It interfaces with the 4D setup system to provide repeatable reference points when measuring or adjusting caster during a chassis setup session.
The part is supplied as a pair and is shaped to match the setup fixture locations on the listed chassis, securing consistent pointer placement between runs. Use it to compare left and right caster values or to establish a baseline before you refine suspension or steering geometry.
Installation is simple: position the adapter on the setup plate or on the designated locating points of the chassis, fasten with the original hardware, then fit the caster pointer as required by your 4D tooling. Verify fit and clearance before final tightening to prevent interference with servo linkages or suspension parts.
This setup accessory helps touring car drivers maintain stable pointer positioning for reliable caster checks and stepwise adjustments at the track.
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