ARRMA MINI KRATON 3S 74mm Alloy Rear Shock Absorbers by GPM MAKM074R  [MAKM074R]

Rear shock upgrade for Mini Kraton 3S

This is a set of RC-scale rear shock absorbers designed for the ARRMA 1/16 MINI KRATON 3S platform. The alloy bodies measure 74mm center-to-center and are supplied pre-filled with 500cSt silicone oil to provide a predictable damping baseline for rear suspension tuning.

Key hardware features are designed to assist setup and maintenance rather than to alter vehicle-level performance. Bleeder screws are provided for straightforward air and oil release during service, while threaded spring preload adjusters let you set ride height and initial spring compression without disassembling the shock. The shock shafts supplied are 3.0mm in diameter, compared with the original 2.5mm shafts, which increases shear stiffness at this scale where thicker shafts help reduce flex under load.

Two spring options are included in the package: a factory-installed black spring with a 1.2mm wire diameter matching the original, plus an additional silver spring with a 1.3mm wire diameter for a slightly firmer spring rate. These allow quick tuning of rear response and traction by swapping springs and adjusting preload.

Installation notes: these shocks mount in the rear shock area and are intended to replace stock rear absorbers of equivalent 74mm centre distance. Use appropriate thread-lock on mounting hardware if reusing metal-to-metal fasteners, and bleed the shocks after filling to remove trapped air for consistent damping.

For hobbyists seeking a metal-bodied rear shock with easy serviceability and modest tuning range for the 1/16 Mini Kraton 3S, this GPM set supplies heavier shafts, bleeder screws, and an alternate spring to adjust rear handling without major chassis changes.