The Fast Trak GRID 2 Bliss Ready T7 has become synonymous with fast & lightweight tires that are able to handle the most technical courses & the most grueling conditions. This model redefines what was thought possible with a cross-country tread design. Our Block-In-Block design uses a taller adaptable inner block to pierce the ground & claw for traction. The larger outer structure supports the inner block for additional speed traction support & stable handling. Adding to this the Fast Trak profile & knob spacing has been optimized for a wide variety of internal rim widths. The GRID casing provides a light & supple trail construction with additional sidewall protection for durability & sidewall stability. To top off this build we use our T7 compound to maximize grip & damping. Casing: 60 TPI light & durable XC/ Trail construction with additional sidewall protection & stability. Bead: Foldable. Butyl wrapped bead = 2 Bliss Ready. Compound: GRIPTON T7. 29 x 2.2 PSI 25-50 approximate weight 730g. 29 x 2.35 PSI 25-50 approximate weight 800g.