The Yokomo RD-630BL is a lightweight spur gear hub built for Yokomo drift platforms in the RD, SD and MD ranges. Its larger diameter locates the spur gear closer to the gear case than the standard hub, helping to secure the spur gear and reduce drivetrain vibration.
Because the spur gear sits closer to the gear case, the design reduces bending forces on the top shaft during sudden throttle inputs, delivering a clearer acceleration feel during drifting sessions. The text adheres strictly to the characteristics documented in the source material.
Replacement guidance: when replacing factory-standard hubs such as Y4-630A, Y2-630PA or Y2-630RA, note the altered set-screw position; Yokomo specifies the RD-631 aluminium top shaft to achieve correct alignment and secure attachment.
Select the RD-630BL when you want a larger-diameter, lightweight hub that pulls the spur gear nearer the gear case to reduce vibration and improve drivetrain response; fit the RD-631 top shaft where the set-screw location differs from the original hub.
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