Extensive testing was done across six continents to ensure the necessary strength and impact resistance went into the ideal mountain bike wheel. To say it straight, Reserve 25 mountain wheels were designed to be put through the paces while maintaining speed, stiffness and durability.Ideal for offroad, XC racingCarbon fiber construction with 3mm asymmetric offsetBuilt with standard high-quality components including j-bend spokes and Sapim mechanically locking nipplesShips with rim tape installed, tubeless-ready valves, and cards identifying the Santa Cruz builder of each of your wheelsBacked by Santa Cruz lifetime warranty