Maxxis's tried and true Ignitor 29 inch Tire is fast rolling and features a versatile tread pattern so you can rip anything with confidence. The Ignitor's directional ramped pentagon knob design provides excellent traction on a range of conditions, and the well spaced tread ensures a low rolling resistance. The Ignitor is offered in two casing options which both use Maxxis' Aramid folding bead and the proficient 70a durometer rubber. The F60 SC uses a 60 tpi nylon casing and the F120 SC eXCEXO has a 120 tpi nylon casing, which adds roughly 100 grams but gives it a more supple feel. And to keep you rolling strong, Maxxis' EXO protection adds an extremely cut resistant and abrasion resistant material to the sidewall to eliminate punctures. The Maxxis Ignitor Mountain Bike Tire 29in has a clincher bead and comes in an XC friendly 2. 1in width.