This Cobra motor mount is an exact replacement for the one that comes with the Cobra 4120, 4125, 4130 and 4135 size motors. It comes packaged with a set of four M4x0.7mm flat head Phillips screws which are 7.5mm long to attach the mount to your motor.
The Cobra 41mm Cross Style motor mount is stamped from high strength 3mm thick aluminum sheet stock and together with the 4 motor screws it weighs 13.0 grams.
The motor mount holes have a 30mm center to center spacing on both diagonals. The hole spacing for the firewall mounting holes is 56mm center to center as measured on the diagonals through the center of the mount.