The Yokomo YOKIB41312 aluminium lower caster block is manufactured as a direct replacement for DRB and DIB chassis, offering a stable 12° lower caster configuration in machined aluminium with a blue anodised surface. It targets changes to lower pivot stiffness and steering roll centre without requiring alterations to adjacent steering parts.
Fitting the part is aimed at experienced modelers: remove the stock lower caster block from the hub carrier, install the aluminium unit, and secure with the original fasteners. Basic hex drivers and a solid bench are all that is normally needed; confirm all fastenings and suspension geometry before track use.
As a tuning item the aluminium option tightens suspension response under load compared with softer materials, while the fixed 12° geometry supports predictable caster behaviour suited to medium- and high-traction layouts. The blue finish also helps with quick visual inspection during setup changes.
Ideal for hobbyists and racers seeking a tougher 12° lower caster solution for DRB/DIB models to sharpen steering consistency during setup and practice.
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