With a shallow aero profile and lively acceleration, the ULTEGRA R8170 C36 wheelset is a climber's delight that delivers performance every road cyclist will appreciate. With the speed and efficiency of tubeless tires, the everyday performance of a shallow aero profile carbon rim, and the convenience of 11-speed and 12-speed compatibility, the new ULTEGRA R8170 C36 wheelset is an upgrade for any road bike.