Tamiya 54777 - FS-12FZ/FN Throttle Return Springs Safety Return Kit  [54777]

Safety upgrade for FS-12FZ and FN engines

The Tamiya 54777 Throttle Return Springs are built to make sure the throttle on FS-12FZ and FN engines snaps back to neutral. That automatic return helps protect the engine if power is lost or a mechanical fault occurs, and keeps throttle behavior consistent for smoother running.

Fit and intended use

These springs are made specifically for cars equipped with FS-12FZ or FN engines. They provide a straightforward way to preserve engine condition, aimed at hobbyists who value dependable throttle control and reduced risk of damage.