The Ultremo ZX is Schwalbe’s high end light weight tire featuring a 127 TPI casing. A triple RaceStar rubber compound comprising of a fast rolling center compound, with softer shoulder compounds for better handling. HD Speed Guard, a high density woven puncture resistance protection layer only available from Schwalbe. And is available in over a dozen colors. Though Schwalbe recommends all black for the very best in performance grip and durability.
Schwalbe also offers the Ultremo ZLX for those looking for an even lighter tire. The ZLX offers zero puncture protection, and is considered a race day only tire. Weighing in at just 160 grams, it sheds 35 grams from a normal ZX tire. But if you’re looking for an all out competition race tire that will offer the fastest, least rolling resistance tire, the ZLX may be your ticket.