This is the Traxxas BEC Assembly.
Traxxas recommends the High-Output BEC, or battery eliminator circuit, when installing high-output servos like the Traxxas #2255 High-Torque 400. The Traxxas High-Output BEC ensures maximum performance with a perfect factory fit. Also available as a kit (#TRA262) for TRX-4 and TRX-6 models.
