HPI Racing has a large selection of high performance touring car tires for every street or track surface. Use the chart below to find the inner foam that meets your traction requirements.

Which type of Inner Foam is best for you?

Pro Molded Inner Foam		Perfect for experienced racers. Molded to fit the reinforcing ribs on the wheel. Available in Mini size and in 22mm, 24mm or 26mm sedan sizes.
Low Bounce Inner Foam		Try these foams in your tires on smooth high grip tracks for another way to tune your car's handling! These foams rebound slower than all the other types of inner foams for a different driving feel. Available in 24mm, 26mm and Super sedan sizes!
Rounded Pro Molded Inner Foam		Rounded shape. Also molded to fit the ribs on the outside of the wheel. The perfect fit for our #4435 Racing Slick tires, these are available in 26mm sedan size only.
Pro Foam Strips		For Super-size wheels and tires only, these foam strips are held together with extremely strong tape. This allows us to offer a full set (four) of foams for a much cheaper price than Pro Molded Inner Foams would be, while you get the performance you need!
Standard Inner Foam		Good for budget racers. One-piece design means no more gluing strips of foam together! Now offered for Super-size tires and wheels!