The Ikon is for true racers looking for a true lightweight race tire. With 3C Triple Compound Technology, high volume casing and a fast rolling tread design, the Ikon provides exemplary performance in all riding conditions. As its name suggests, the Ikon represents all that is true in racing. The Ikon is a lightweight high volume XC tire that rolls fast and has ample tread to provide secure traction in varied conditions. High volume casing and fast rolling tread design provide exemplary performance in most riding conditions. MSPD (MaxxSpeed) is the latest version of Maxxis' race compound. It utilizes a silica filler to improve speed wet traction and further reduce rolling resistance by 25%. EXO equipped models feature Maxxis' EXO sidewall protection, which helps prevent puncture from sidewall abrasions. TR, or Tubeless Ready, requires sealant.