rcruv,
They are from Mugen racing (they are called Fast Tires) and we have them on our website under the Mugen Foam tire section. The front 26mm are part number FVX4x (and you select the shore rating from the menu) and the rear 26mm are part numbers FVX5x (select shore rating from the option menu) and finally the 30mm rears are part number FVX6x (shore rating from the option menu)
Steve Wang
Speed Tech R/C
www.speedtechrc.com