This graphite rear chassis brace is an accessory engineered to mount on the resin rear chassis support of the YZ-4S. The rigid graphite plate crosses the resin support to limit flex and reinforce the rear section of the chassis.
Fitting uses the resin brace's existing mounting points: place the plate over the support and secure it with the same screw positions used by the original resin component. No permanent modification to the main chassis is necessary.
As a tuning element, the graphite brace produces a stiffer rear feel that can change traction and yaw tendencies. Modelers apply it to fine-tune balance and stability without altering suspension geometry or drivetrain hardware. This product is intended for model RC use only.
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