This is an RC-scale rear lower suspension mount produced for ARRMA platforms, machined from 7075-T6 aluminum with brass inserts to improve hinge-pin fit and durability. The part targets the rear gearbox area and is intended to reduce flex at the lower arm pivot while keeping alignment stable during aggressive bashing or high-speed runs.
The component replaces factory part number AR330379 and is supplied with the hardware listed below. The aluminum body gives higher wear resistance compared with standard stamped parts, while the brass inserts provide localized bearing for the hinge pins to reduce slop without introducing brittleness.
Installation notes: the mount fits into the rear lower suspension location 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 verify arm alignment and hinge-pin retention after assembly. This is a chassis-level tuning part intended to improve suspension stability rather than change suspension geometry.
For builders maintaining or upgrading ARRMA 6S machines, this GPM rear lower suspension mount provides a direct aluminum replacement designed to reduce hinge-pin play and keep the rear lower arm stable under load, use the supplied hardware and check alignment after installation.