Replacement rear hub components molded from impact‑resistant composite for ARRMA 1/10 scale 4x4 BLX 4S vehicles to restore correct wheel mounting and suspension alignment after wear or crash damage. Installed in the rear suspension upright, these hubs locate the wheel hex and support driveshaft engagement, preserving smooth rotation and reliable articulation under high‑load off‑road conditions. Precision molding promotes consistent fit and long service life in sport‑level RC use.