The 3Racing SAK-A578SS Graphite Upper Deck is engineered to reduce unwanted chassis twist on the Sakura Advance 21 platform. Using graphite material improves torsional rigidity, making suspension behaviour more predictable during tuning sessions.
Graphite provides a favourable stiffness to weight ratio that benefits steering precision and mid corner stability. For competitive drivers, the SAK-A578SS allows finer adjustment of roll centre and damping interactions without altering hardpoints.
Manufactured to match Sakura Advance 21 mounting interfaces, this upper deck installs without changing factory geometry. After fitting, validate shock valving and spring rates as the reduced chassis flex often requires small suspension retunes to optimise grip and turn-in.