The 3RACING SAK-U321 Graphite Composite Rear Hub is produced for the Sakura Ultimate chassis to support precise setup adjustments. The built-in 2-degree toe offers a predictable change in rear geometry useful when optimising balance, while the graphite composite keeps component mass low without sacrificing stiffness needed for consistent feedback.
From a setup perspective, the SAK-U321 helps reduce rear understeer at turn-in and improves line consistency through apexes. Fitment aligns with Sakura Ultimate rear mount points; when integrating this hub into a race setup, re-check toe, diff preload and shock rates to harmonise overall handling.