This RC-scale rear lower suspension mount is made for ARRMA platforms and is CNC machined from 7075-T6 aluminum with brass inserts to tighten hinge-pin fit and increase longevity. The component focuses on the rear gearbox region and is intended to reduce flex at the lower arm pivot while helping the suspension maintain alignment during hard bashing or high-speed runs.
The piece replaces factory part number AR330379 and is supplied with the hardware listed below. The aluminum construction offers greater wear resistance than stamped stock parts, and the brass inserts provide localized bearing surfaces for the hinge pins to lower slop without making the mount brittle.
Installation notes: the mount installs in the rear lower suspension position on compatible ARRMA 1/8 and selected 1/7 6S models. Use the supplied grade 12.9 black flat head screws for secure fastening and check arm alignment and hinge-pin retention after assembly. This is a chassis-level tuning piece meant to improve suspension stability rather than alter suspension geometry.
For builders maintaining or upgrading ARRMA 6S machines, this rear lower suspension mount from GPM is a direct aluminum replacement designed to reduce hinge-pin play and keep the rear lower arm stable under load; use the supplied hardware and verify alignment after installation.
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