Yokomo Y4-630A Precision Aluminum Spur Hub for YD-2/YD-4  [Y4-630A]

Performance Upgrade: Yokomo Y4-630A Spur Hub

The Yokomo Y4-630A Aluminum Spur Gear Hub fits the YD-2 and YD-4 chassis and is machined from black anodized aluminum to balance strength with reduced weight. It clamps to the spur gear and main shaft to keep the drivetrain solid under high loads, helping maintain steady power delivery on sprint and carpet layouts.

Benefits of an Aluminum Spur Hub

Aluminum gives a reliable strength-to-weight ratio that reduces rotating mass while resisting deformation. The anodized surface helps resist wear from gear contact and provides consistent seating for the spur gear. Swapping to a metal hub typically improves gear mesh stability and results in crisper acceleration response.

Fitment and Simple Installation

This hub is made specifically for Yokomo YD-2 and YD-4 cars for direct replacement of stock plastic parts. Installation is straightforward and generally requires only basic tools to transfer the spur and secure the hub to the shaft, making it a practical tune for weekend racers and club competitors.