This aluminium alloy motor heat sink is an RC-scale accessory produced by GPM for Kyosho Mini Inferno ST applications. It increases exposed surface area around the motor to aid heat dissipation, helping to stabilise motor temperature during repeated runs and short races. The part is intended for hobby-grade electric RC use and not for full-size vehicles.
Installation is straightforward for experienced hobbyists: the heat sink is positioned to contact the motor housing and relies on the vehicle's existing motor space and clearance. Verify fitment around the motor can and any nearby wiring or ESC placement before final mounting. Minimal trimming of adjacent components is sometimes needed depending on your setup and body fitment.
In tuning terms this upgrade is a passive thermal management aid. By lowering peak motor temperature it can reduce thermal-related power loss during sustained throttle periods, which helps maintain more consistent output across multiple runs. Pairing with proper ESC programming and sensible gearing will achieve the best overall results.
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