The Factory Pro O-XCP004 Body Rideheight Downstop Set is an accessory intended for use with the XRAY T4'21 touring chassis. The downstops establish a defined lower limit for body rideheight to maintain consistent body clearance during setup and on-track running.
They work as fixed interface points between the body shell and chassis to set minimum rideheight without changing suspension geometry. In practice this repeatable body-to-chassis gap makes trimming polycarbonate bodies and comparing aerodynamic settings more straightforward, since body height does not drift between runs.
Fitting is aimed at competent builders: the items locate at the standard T4'21 body post positions and are adjusted to the desired stop height rather than used as suspension end-stops. Check the seller listing to confirm what, if any, mounting hardware is included with the set.
Tuning note: use the O-XCP004 downstops as a consistent reference point when testing body cut patterns, wing settings, or when transferring setups between similar T4'21 cars to better isolate rideheight effects.
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