KENDA Klaw XT Rear 26 x 2.10 (K-891) Wire Bead All Black. Kenda Klaw XT Rear 26 x 2.10" (K-891) Wire Bead All Black. Rear Specific ! Great all purpose, all terrain mountain bike tire ! Aggressive knobby for extreme FR, single track & cross-country riding, wide spaced knobs to clear mud easily ! ISO Diameter: 559. ISO Width: 54 mm. PSI: 40 - 65 PSI. TPI: 60 TPI