The Aspen is a lightweight XC tire that is designed to roll fast and still provide enough traction to keep you going when the trail gets rough.MaxxSpeed features a high-silica content compound that reduces rolling resistance while also enhancing wet traction. EXO casing provides protection on sidewalls for extreme cut and abrasion resistance while remaining lightweight and highly flexible. Team-spec tires feature a lighter, faster and more supple 170 TPI casing for the lowest weight possible, with a reduction in durability. Low profile tread design rolls fast and still delivers grip for climbing and braking. Aggressive side lugs dig into soft terrain to provide additional cornering traction. Intended use: hardpack, loose over hard, medium. Item Specifications: Flat Protection, Sidewall,.