For competitive drivers, the 3Racing SAK-D4821/V2 aluminium knuckle delivers a stiffer steering pivot point that aids consistent toe and camber behaviour under load. Its aluminium construction reduces compliance compared to stock plastic, which helps preserve intended suspension geometry during aggressive transitions.
The SAK-D4821/V2 provides a more rigid connection between the upright and steering components, lowering unwanted movement that can obscure steering feedback. That stability assists precise input corrections and repeatable drift lines in race conditions.
Manufactured to match Sakura D4 mounting dimensions, these knuckles install cleanly to retain existing caster and kingpin positions. The predictable fit simplifies setup changes and makes tuning for steering angle and Ackermann more reliable.
A practical race upgrade for tuners who prioritise steering consistency and repeatable handling across practice and event sessions.