If you run a Mugen MRX5 and want firmer rear-end response, the Arrowmax AM-MRX5-H2114 Rear Upper Arm Holder is designed to help. It strengthens the upper arm mounting area to give more predictable suspension feedback on the track.
The Arrowmax holder aims to keep suspension arms aligned under load, which helps maintain consistent handling through corners. Built for longevity, it reduces the need for frequent part swaps so you can spend more time on setup and less on repairs.
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