Emaxx Wheel Adapters

Have a wheel adapter ?.
I just finished building my 95% all alum Emaxx up from a gorillla max chassis. I'm running the Novak HV maxx BL setup. I bought some 40 series Proline Road Rage tires and bead lock rims to try and stick the truck to the pavement. I got the rims today an noticed they are 23MM and not 14mm like the stock Emaxx. Any good suggestions for any adapters ? I found these, Are they any good.
http://www.crazynutracing.com/produc...13816a92b595bb