One wheel to rule all roads. Road light, off-road tough, smooth as butter, Terra CLX BOOST wheels bring leading-edge performance to the diverse needs of mixed-terrain rides. These are the lightest gravel wheels on the market. They sport 25mm internal-width rims, deliver a durable and exceptionally smooth ride, are compatible with 28-42c tires with up to 90 PSI, 110x12 and 148x12mm thru-axle, and they come with a lifetime warranty and no-fault crash replacement.