The Yokomo B9-415RA Rear Hub Carrier is a precision part made for the BD9 2019 chassis. This resin upgrade swaps the standard composite for a softer compound to increase tyre contact on asphalt and other low-grip surfaces, improving traction and composure through corners. It suits racers and hobbyists looking for better on-track balance.
Choosing the softer resin of the B9-415RA gives the rear end more compliance, which helps the tyres maintain grip on slick tarmac. That extra flex can smooth transitions and reduce sudden slides, giving you more predictable handling during tight sections or low-grip conditions.
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