Professional model controller. Suitable for all cars. Wire choke feature improves control of car power and smoothness. Now includes support for brushless motors, enhancing performance and compatibility.
The P4 is the full-featured controller in the Kobis lineup, combining wire choke and third-generation anti-brake in a single build. Anti-brake is designed for brushed Open12 and Production 24 racing — it reduces braking force at corner entry, allowing the car to rotate more freely and carry more speed through corners.
The wire choke bypass works the same way as in the PS10: built into the 16-position rotary switch, with bypass active from positions 1–13 (choke range 0–26 feet), bypass off at position 14, and resistor-based choke at positions 15 and 16. The latest version adds a bypass button for temporary full-power override without changing the choke setting. The P4 also includes the brake power management system and anti-brake power indicator.