The Maxxis Aggressor is designed for high-speed modern mountain bike trails to set a new standard for enduro tires. Advanced knob shaping creates extra gripping edges, and reinforced side knobs offer enhanced stability when cornering at speed. An all-around trail tire excelling on everything from loose cross-country race courses to heavy all-mountain riding. The most important part of a tire is arguably the rubber compound used to within the tread and with Maxxis's Dual Compound you get two compounds that offer low rolling resistance and increased cornering grip. Available Technologies: DD: DoubleDown provides two 120 TPI casing layers reinforced with a butyl insert for downhill protection at a lower weight TR: Tubeless Ready for increased traction and lower rolling resistance WT: Wide Trail casing used on 2.5" models is optimized for 30 - 35mm inner width rims Specifications: Tire Type: Tubeless (Clincher) Bead: Folding Compound | Casing: Dual | DD (DoubleDown) TPI (Threads Per Inch): 120 TPI Puncture Protection: Yes Inflation: 60 PSI Color: Black Weight: 1045g (27.5"| 2.3"), 1115g (29" | 2.3")