Always the correct part
This is the Factory Team Centered ESC Mount By Team Associated
FEATURES: The Factory Team Centered ESC mount allows racers to mount their ESC in the center of the car against the rear bulkhead. In addition, the Centered ESC Mount makes room underneath for the receiver when using shorter packs. These changes move more of the weight to the center, allowing the vehicle to change direction faster. This advantage is even more pronounced on high-grip surfaces Made of carbon fiber.
INCLUDES: One mount Two M14x3mm screws with socket for 3mm hex wrench Six M8x4mm washers
SPECS: Length: 65mm (2-1/2") Width: 28mm (1-1/8") Thickness: 2mm (1/16") Mounting holes, center-to-center: 57mm (2-1/4")
COMMENTS: Designed for the Team Associated B4 and T4 series vehicles.