RC4WD SCX10 AX2 2 Speed Transmission

RC4WD AX2 2 Speed Transmission on my Axial SCX10, pinion gear 14t, crown wheel 90t on a 21.5T 2100kv robitronic brushless sensored motor. 5.05:1 on 1st gear, 1.78:1 on 2nd gear