29-Inch

Your kids will hang with the big dogs on this cross country tire. The XR1 Comp Kids' Mountain Tire has a tread identical to that of its fully-grown adult version, perfect for multi-purpose riding on trails or pavement. - Excels in hardpack and loamy conditions - Ramp center knobs for fast rolling - Fast-rolling and predictable cornering - 60 TPI - Maximum pressure: 50psi - Wire bead - Weight: 485g

The XR3 Team Issue Tubeless Ready mountain bike tire is the right choice for high performance over the widest range of trail conditions. Advanced rubber compound and Inner Strength protection make XR3 Team Issue tires Trek Factory Racing's pick for best all-around high-performance for cross country. Key features - Versatile tread provides consistent traction and cornering - Excels in a wide variety of conditions - Tubeless Ready (TLR) tire is engineered for easy tubeless setup and puncture protection - Inner Strength casing is lightweight sidewall protection that's supple and strong

The go-to tire for aggressive riders. The XR4 Team Issue TLR tire offers incredible grip and fast-rolling efficiency in a new and improved tread pattern with 120 TPI casing. Save yourself from punctures with our Inner Strength sub-tread protection while squeezing out every bit of cornering traction with the 61a/50a dual-compound rubber. This tire really is that good. - An aggressive trail tire that excels in loose and rocky conditions - Aggressive tread design provides confident cornering and braking traction in demanding terrain - Tubeless Ready (TLR) tire is engineered for easy tubeless setup and puncture protection - Supple and strong Inner Strength casing provides lightweight sidewall protection - Lightweight 120 TPI casing provides great ride feel and tire performance