The specialized roval control sl 29 carbon clincher 29inch wheel set call us obsessive but in cross country racing we know that every gram counts that39s why the roval control sl 29 wheels place a strict focus on competitive xc racing meaning that they deliver in the weight stiffness and durability departments to do so they39re hand built on ultralight and incredibly stiff carbon rims that are manufactured with a zero bead hook design this design pairs perfectly with tubeless tyres whi