The GPM CGK5090X is an aluminium 90mm front/rear internal shock set produced for Vaterra K-5 and also listed for HPI Crawler King and Gmade R1 compatibility. Designed as a direct replacement accessory for 1/10-scale crawlers, these shocks use a sealed internal design with engraved bodies to offer a consistent aesthetic and simplified lower-profile installation compared with external coil-over units.
In practical terms for the hobbyist, the part functions as a tuning component for suspension behaviour: swapping from stock plastic or filled units to aluminium internals changes mass distribution and heat dissipation, and provides a rigid mounting surface for tuning oil and spring setups. The item ships as a one-pair set intended for either front or rear positions depending on your chassis layout.
Installation notes: these are RC-scale internal shocks sized at 90mm; verify stroke and mounting eyelet spacing against your chassis before fitting. Basic setup workflow is to install in place of existing internal shocks, check body clearance, and adjust oil/spring choices to match vehicle weight and intended crawling terrain.
For builders focused on consistent feel and a durable machined look on 1/10 crawlers, the GPM CGK5090X 90mm aluminium internal shocks offer a direct replacement option compatible with several crawler platforms and a straightforward upgrade path for suspension tuning.
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