From hills to plateaus, road races and cyclo-cross, the T Cosmic Pro Carbon SL is the ultimate in professional level. It is lightweight, rigid and aerodynamic - specially designed for disc brake technology. The tubular rim is born from our Cosmic Carbon 40 T, winner of the Paris-Roubaix prize. It is 25mm wide to provide better tire support and improved aerodynamics. Its 3K carbon layer is designed to last and withstand major impacts. It is also designed for the unique performance characteristics of disc brakes. Since 90% of the rider's weight is transferred to the front wheel when braking hard, we built the front wheel with a higher number of spokes (24). The spokes are crossed on each side of the hub to better transfer the braking load to the ground without loss of rigidity and no wobbling of the wheel. The rear wheel is designed for maximum power transfer and ride efficiency, using 24 spokes and Isopulse lacing (radial drive side) for maximum energy transfer. It also features our Instant Drive 360 hub to reduce friction, engage the freewheel and be compatible with any frame thanks to the tool-less 12-axis quick release conversion. The front wheel is ready to accept a 12mm through axle, but easily converts to a standard quick release and a 15mm through axle with optional adapters. The rear wheel is delivered as 12x142 and can be converted to a standard quick release with optional adapters. Cosmic Pro Carbon SL T is only available for Center Lock rotors and Shimano / SRAM cassettes. It is convertible into Campagnolo or SRAM XD with optional pilot bodies.