This alloy rear heat sink is a compact accessory created for the Kyosho Mini-Z Overland chassis to help control motor temperatures under high-rev or repeated-run conditions. Its increased surface area and alloy construction assist passive heat transfer away from the motor can without adding active cooling components.
Fitment is specific to the Mini-Z Overland rear motor layout; visually confirm the rear motor mount and motor can clearance before fitting. Typical installation requires removing the motor mount cover or shroud and seating the heat sink against the motor casing so it bears securely without touching the spur, pinion or suspension bits. Use the correct fasteners from your kit and check wire and gearbox clearance after installation.
In tuning terms, this heat sink is a thermal management aid rather than a power mod. It helps keep motor temperature more consistent during consecutive laps or practise runs, which can reduce thermal-induced power sag or protective cutoff in sensitive setups.
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