With the introduction of the XRAY X4F'27, the front body mount positions remain unchanged compared to my previous setup guide. Only the rear body mount positions have been updated for the following body shells.

YRS
Front: 55 mm from the upper edge of the windshield.
Rear: 20.5 mm above the lower edge of the taillights.
Rear body post spacing: 124 mm.

These positions have worked very well for me on the XRAY X4F'27 and provide a solid baseline setup. As always, minor adjustments to the rear body height can be made to fine-tune the handling depending on track conditions and grip levels.