The Ignitor tread pattern was designed for the most discerning professional racers and has laid claim to multiple World Cup victories. The well-spaced tread pattern fills in nicely to provide low rolling resistance in the straights, while the ramped pentagonal knobs provide excellent traction in the corners and in medium soil.Directional ramped pentagon knob design,Excellent multi-condition performance,Compatible with front or rear.Specification:Conditions: Loose Over Hard, Loose, Medium,Cornering Control: 1 2 3 4,Rolling Efficiency: 1 2 3 4,TPI: 60,Bead: Foldable,Ply Construction: Single,Compound: Dual,Max PSI: 65,Tech: SilkShield, eBike.TechnologySilkshield: SilkShield offers protection from bead to bead whereas Silkworm is found under the tread only. SilkShield provides an additional level of protection for sidewalls in addition to under the tread.eBike: Conforms to the European ECE-R75 certification for e-Bikes