Mavic crossmax xl pro wts mtb rear swheelthe crossmax xl pro wts mtb rear wheel is the adventurers choice and features the ultimate versatility wheel tyre system designed to withstand the rigours of enduro and make the most of all day rides the 23mm rim 27mm external brings great comfort and support when the trails get technical the rim is also paired back leaving just the right amount of material in high constraint areas and even more weight is saved thanks to machining between the spokes