The 3Racing Sakura Ultimate Stock Upper Deck in 1.5mm graphite is specified to give competitors a predictable stiffness baseline. The 2.0 ratio alters torsional distribution to allow more controlled roll characteristics and finer adjustments to suspension geometry. Graphite provides a stiff yet lightweight platform compatible with typical race setups.
Use this upper deck when adjusting roll balance, sway bar rates, and shock tuning to achieve consistent tyre contact patches. The 1.5mm section is suitable for incremental performance gains without introducing excessive stress to mounting points. Monitor fastener torque and inspect for fatigue when running high grip compounds or aggressive setups.