These 170-TPI-casing versions are normally available exclusively to Maxxistop sponsored riders and teams, but for a limited time only, every rider can purchase these same premium tyres!  The Aspen ST (or Fastpen, as its sometimes known) is a new ultra-low-profile XC tyre based on the Aspen. Eagle-eyed race fans may recognize the Aspen ST tread pattern from spy shots, but it's never been publicly available until now. Designed to be even faster than its predecessor, the Aspen ST is sure to catapult you to the podium, just like it helped Nino Schurter to countless World Cup wins. The Team Spec Aspen and both versions of the Aspen ST are available in 29x2.40 and 29x2.25 options.The Aspen ST debuts a much lighter and faster 170-TPI casing and feature an exclusive Team Spec hot patch. Because these tyres are designed to be used solely in racing conditions and feature pro-level speed and rolling resistance, they arent suitable for the average weekend ride. An all-new MaxxSpeed compound fo