diy component of reverse tricycle

Item included all as inside the below picture 
Note : wheels and bike excluded ( cause heavy product is expensive shipping cost )

what wheel size fit it for ?:
if the rear wheel is 26 " then the front wheels should be use the 22 "
Rear wheel is 24" then the front wheels should be use the 20"
Rear wheel is 20" then the front wheels should be use the 16" , etc........
mean's the front wheels should be 4 inchs less than the rear wheel 
cause for balance the whole bike need .

About the brake , we offer a pair brake , one for left and one for right ( Pair )
it is control by the one to two brake steel line , so it is a perfect brake system .
no complicate for assemble all .
please feel free to contact us if any questions for this product :-)