Upgrade the ARRMA KRATON 8S BLX Monster Truck with the GPM aluminium centre gearbox to tighten gear tolerances and improve rotation smoothness. Machined from 6061 T6 aluminium, the housing aids cooling of the gear train and holds bearings in precise locations to limit axial and radial clearance. The CNC 3D streamlined finish adds a neat metallic look while supporting dependable gear engagement during intense running.
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