29-Inch

The Ground Control Sport is an exceptionally versatile trail tire that uses a tread optimized using Finite Element Analysis. This means that it rolls fast and provides increased grip and traction in nearly all conditions. - Casing: 60 TPI - Bead: Wire - Compound: 60a - 29 x 2.1", psi 25-50

The Hardrock'R is a long lasting tire with an aggressive, yet smooth rolling, tread with multi-directional knobs that are sure to improve traction and cornering over mixed terrain. And with the added benefit of Flak Jacket flat protection, you'll be sure to hit it all with confidence and control. - Casing: 30 TPI - Bead: Wire - Compound: 70a - Flat Protection: Flak Jacket - 29 x 2.0", PSI 35-65, approximate weight 1000g

There are days when Mother Nature doesn't want you to ride, so she throws out wind, rain, snow, or frame-clogging mud. Specialized's Storm Control is the tire for those conditions and those riders who don’t shy away from the challenge. With 2Bliss technology, soft rubber compounds that stick to wet roots and rocks, and large well-spaced knobs that shed mud, this tire offers the traction and control needed to storm sections that most riders wouldn't even consider hiking over.