Traxxas Revo 12-fin engine heatsink by 3Racing RE-021/P  [RE-021/P]

12-fin engine heatsink overview

This 12-fin engine heatsink is an RC-scale hop-up targeted at Traxxas Revo chassis owners who want a straightforward, color-matched upgrade to their engine cooling hardware. The part is sold under 3Racing model RE-021/P and is presented in a purple finish that matches visual upgrades on Revo builds.

Functionally the heatsink serves as a passive heat spreader for the engine head, increasing exposed surface area to improve heat dissipation during operation. In practice this helps maintain more stable engine temperatures on longer runs and under heavier load, while also offering a visual change for chassis styling.

Installation notes: this heatsink is designed for direct fitment to the Revo engine head profile, so verify clearance with your existing body, head studs, and tuned pipe routing before final mounting. When fitting, check that existing fasteners and head height remain compatible and that there is no interference with the chassis' other components.

Tuning role: use this heatsink as part of a broader thermal management approach — pairing it with proper cooling airflow from the body and careful fuel or engine tuning helps sustain consistent performance. The heatsink is an accessory for heat control and does not alter engine internal timing or fuel requirements.

This heatsink is a simple, reversible hop-up for Traxxas Revo owners seeking improved passive cooling and a purple aesthetic element; evaluate fitment and clearance on your specific Revo setup prior to purchase.