29-Inch

Specialized took the tread design of the Fast Trak GRID tire a step further by manipulating each knob with FE Analysis. They improved an already proven tread by having more consistent shoulder blocks for better cornering traction and block spacing is configured for better self-cleaning. GRIPTON compound gives a livelier feel and grip is enhanced in wet or dry conditions. They recommend GRID tires for anyone seeking the utmost in flat and sidewall protection. - Casing: Additional sidewall protection for exceptional durability, plus added sidewall stiffness for enhanced stability. - Bead: Foldable - Butyl wrapped bead = 2Bliss Ready - Compound: 60a - 29 x 2.1" psi 25-50; approximate weight 670g - 29 x 2.3" psi 25-50; approximate weight 720g

Specialized's Ground Control GRID is an exceptionally versatile trail tire. CAD engineered knob shapes strengthen knob structure for optimum braking and traction, but keep knob surfaces adaptable for best ground control. The GRIPTON compound helps make this the perfect choice for epic trail rides in any condition. Specialized recommends GRID tires for anyone seeking the utmost in flat and sidewall protection. - Bead: Foldable - Butyl wrapped bead, 2Bliss Ready - Compound: GRIPTON - 29 x 2.1" psi 25-50; approximate weight 710g - 29 x 2.3" psi 25-50; approximate weight 810g

The Ground Control Grid 2Bliss Ready T7 uses an extremely versatile tread pattern which can be used from cross country race to trail, it rolls fast with exceptional amounts of confidence and grip. Our Block-In-Block design uses a taller adaptable inner block to pierce the ground and claw for traction. The larger outer structure supports the inner block for additional speed, traction, support and stable handling. The GRID casing provides a light and supple trail construction with additional sidewall protection for durability and sidewall stability. To top off this build we use our T7 compound to maximize grip and damping. - 27.5 x 2.35", PSI 25-50, approximate weight 800g. - 27.5 x 2.6", PSI 25-50, approximate weight 850g. - 27.5 x 3.0", PSI 25-50, approximate weight 1050g. - 29 x 2.2", PSI 25-50, approximate weight 820g. - 29 x 2.35", PSI 25-50, approximate weight 845g. - Bead: Foldable. - Butyl wrapped bead = 2Bliss Ready. - Casing: 60 TPI, light and durable XC/Trail construction with additional sidewall protection and stability. - Compound: GRIPTON T7.

The S-Works Fast Trak has become synonymous with fast and lightweight tires that are able to handle the most technical courses in the most grueling conditions. The block pattern is carefully arranged for fast rolling abilities and superb traction, while the blocks have been optimized to adapt to slippery surfaces with enough bite for loose ground. And now, it also features our own GRIPTON compound that maximizes mechanical grip, damps vibration, and offers unparalleled traction in either wet or dry conditions. How? Our GRIPTON compound recipe filters low and high frequencies, keeping your tires planted and you in control. - Casing: 120 TPI - Bead: Foldable - Butyl wrapped bead = 2Bliss Ready - Compound: GRIPTON - 29 x 2.1", psi 25-50, approximate weight 550g - 29 x 2.3", psi 25-50, approximate weight 595g