This semi-slick tire borrows its tread design from the trail version of the Rekon, but with smaller and shorter knobs. Use it as a rear tire paired with a more aggressive front tread, or front and rear for short track racing Semi-slick XC tire designed for racing at the top level MaxxSpeed: new MaxxSpeed (2023) is a top-shelf rubber compound for XC racing. It&';s a high-silica content compound which reduces rolling resistance while also enhancing wet traction EXO: additional densely woven, lightweight, flexible fabric added to casing for enhanced puncture protection TR: tubeless ready Tire Diameter: 29" ISO Diameter: 622 / Mountain / 29" Labeled Size: choose; 29 x 2.25", or 29 x 2.4" Tire Intended Use: Mountain Flat Protection: Sidewall Designed for ebike: Yes TPI: 120 PSI: 50 Tire Type: Tubeless Ready Clincher Tire Bead: Folding All Maxxis tires 2.40" and up are considered WT according to Maxxis whether or not they are labeled WT Weight: 744g. (29x2.25"); 825g. (29x2.4")