Q: Can you give quote of just 20 inch 1500W BMX hub motor and wheel only? For BMX 20 inch rear with wheel to fit 2.4” tire. 
Also, does this BMX motor have wires coming out before threads on axle?
https://www.leafbike.com/products/diy-bike-conversion-kit/bmx-20-inch-48v-52v-1500w-rear-hub-motor-electric-bike-conversion-kit-1180.html
 
A: Please click below site. The price and the shipping cost is the same to below link.
https://www.leafbike.com/products/e-bike-hub-motor/20-inch-48v-52v-1500w-rear-bike-motor-wheel-1016.html 
If order, just leave message: BMX motor fit for 110mm dropout.

Q: Is there a physical difference between the 750w, 1000w, and 1500w BMX hub motors themselves? Different number of turns, gauge wire, etc?

A: 36v 750w & 48v 1000w are the same motor. 
1500w is different from 1000w motor.
Difference as below:
1. the width of 1000w is 35mm hub, 1500w is 40mm hub
2. magnet height of 1000w is 30mm, 1500w is 35mm magnet
3. the width of 1000w winding rotor is 30mm, 1500w is 35mm winding rotor

The gauge wire is the same, but 1500w should use much more wires than 1000w.
About number for turns, we can customize different turns for 1000w, 1500w.

Q: Thank you for all the help in choosing what to order. Do the wires come out of the axle inside our outside of the dropouts? I have attached a picture of the wire coming from inside the dropouts.

A: 1500W 135mm dropout motor can use 3mm phase wire – cable inside fork
1500W  110mm dropout BMX motor uses 2mm phase wire – cable out of shaft end, outside fork.

Q: This video is where I am seeing the 110mm BMX setup from leaf bike. In his description, he states it’s a front hub motor “made to fit a sprocket”  and in his video he shows the wires coming from inside the “fork”
Is this something you also do for my order? Or maybe the person is misunderstanding.