The hop-up starts by removing the stock power system. I had a burr in my motor shaft which made it difficult to remove the prop adapter but otherwise the removal was easy.

The motor mount cage faceplate can be easily unscrewed. The holes used by the stock geared Speed 680 motor are not the same ones needed for the AXI 2820 motor. A second set of existing holes is almost a perfect fit for the AXI motor so you only need to very slightly enlarge them to create a perfect alignment that matches the motor.

The new AXI motor weighs only 5.2oz compared to the 11.4oz stock geared motor. Already, we have an incredible 6.2oz drop in weight so we are off to a great start!