The Arrowmax AM-MRX5-H2114 Rear Upper Arm Holder is a targeted upgrade for drivers running a Mugen MRX5. It reinforces the upper arm mount to help the rear end remain composed during aggressive driving.
This part is engineered for stable arm alignment and durable performance under race conditions. By keeping suspension behaviour consistent, it helps reduce unpredictable handling and lowers the frequency of maintenance between events.
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