The GPM HM1056 rear lower suspension arm is CNC inspired in design to improve the long term resilience of the Tamiya M1025 Hummer. Fabricated from robust aluminium, the component reduces flex and spreads impact loads more evenly across the chassis mounts. This improves repeatable handling and extends service intervals compared with OEM plastic arms.
Fit with calibrated drivers and inspect mating faces for burrs before assembly. Verify parallelism of suspension pivots and check rod end movement across full travel. For competitive setups, consider matching the arms with tuned shocks and revised sway links to fully exploit the HM1056 stiffness.