Mavic en821 disc mtb rim the highest level of technology ever seen in a rim ism ust fore maxtal this 21mm asymmetrical rim is the perfect partner for riders looking for strong and versatile rims features maxtal sup fore ust tubeless or tubetype disc weight 460 grams 26 dimensions etrto size 26 559 x 21 recommended tyre widths 200 to 250 valve hole diameter 65mm technologies ust tubeless ready traction control and lightweight the ust concept improves traction control and c