Mavic cxr ultimate powerlink tubular tyrethe first tyre engineered together with its marching rim to enhance aerodynamics and improve power transfer as the wheels leading and trailing edge the tyre is key to the speed yksion cxr and cosmic cxr are unified by the cx01 blades to create the fastest wheel tyre system available its powerlink tread compound optimizes rolling efficiency features powerlink a rear tyre whether a clincher or a tubular must fully liberate the wheels ability to tran