The GPM MAKX187DP rear shock absorber shaft core kit uses 4140 carbon steel teamed with aluminum 6061-T6 to strengthen the ARRMA KRATON 8S dampers. By enlarging the shaft from 5.0mm to 6.0mm, the upgrade lowers the chance of deformation during hard use. It works with both GPM and OEM shock assemblies and incorporates an enhanced oil seal profile to limit leakage and preserve consistent damping.
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