DT Swiss XRC 310 Carbon discspecific 28 hole Prestadrilled black 29"XRC 310 breaks records, not backs. For riders committed to constant improvement, the XRC 310 is DT's lightest MTB rim so far and your gateway to the top Enjoy snappy acceleration and finely tuned agility, driving you to the forefront of the XC racing pack DT's cutting edge and patent pending moulding technique maximizes carbon layer compression and removes the requirement for any cosmetic additional outer layer meaning these rims are even lighter and