ProTek RC Aluminum Samurai RM, S03 & R03 Carburetor Restrictor (7.5mm)

The ProTek RC Aluminum Samurai RM, S03 & R03 Carburetor Restrictor is a 7.5mm venturi designed to adjust airflow into the engine and fine-tune power delivery and run time.

This optional carburetor restrictor is compatible with Samurai 321B, OS V-Spec, Novarossi and RB carburetors. A larger venturi can provide more top-end power for larger tracks, while a smaller venturi can improve bottom-end throttle response and run time for smaller tracks.

For replacement restrictor O-rings, use part PTK-2517.