If you have not done the conversion Serpent wheels are need for the Razor. If you do the conversion you can use the OS2 wheels.

Edam is working on the molds now for the OS2 wheels. Most other guys convert using Mugen or Serpent parts.

GQ racing Tires has the Serpent Rims and I have them in stock. If you are in the USA just order off our site www.GQamerica.com. If you are outside the USA just PM me and I will help you find tires.