CGK5090X is a 90mm aluminium front/rear internal shock insert set designed for Vaterra K-5 and noted for compatibility with HPI Crawler King and Gmade R1. Machined engraved bodies deliver uniform tolerances and a low-profile install compared with external coil-over assemblies.
These internal units are intended as a tuning platform: aluminium inserts alter inertia and improve heat transfer relative to some plastic internals, providing a stable mounting surface for controlled oil and spring adjustments. The set ships as a matched pair for use in either the front or rear depending on chassis requirements.
Technical fitment notes: confirm internal stroke, 90mm overall length and eyelet spacing before fitting. Installation involves replacing existing internals, checking for lateral clearance, and then calibrating oil viscosity and spring rates to achieve the desired rebound, compression and static sag for the vehicle.
For technical hobbyists seeking a consistent internal shock platform with a machined finish, the CGK5090X 90mm aluminium inserts provide predictable tuning behaviour and robust fitment characteristics. by GPM