Shimano Ultegra C50-TL Tubeless Carbon Road Disc Wheelset. 

Launched as part of the new Shimano Ultegra 12 speed road disc groupset, the WH-R8170 C50TL wheelset is completely redesigned and features a 50mm deep, 21mm wide aero carbon tubeless clincher rim mounted to Ultegra level wide flanged hub using the OPTBAL spoke system. 21 spoke, 14 drive side, 7 non drive side for more balanced spoke tension. 

Wheel Specifications:

• WH-R8170 TL carbon clincher disc brake designed to meet pro road race criteria
• Lightweight clincher full carbon 50 mm deep rim for improved aerodynamics, increased rigidity and excellent inertia for sprinters and TT specialists
• Easy to use Center Lock rotor mount for use with disc brakes
• Stainless steel butted (2.0-1.8-2.0) and bladed straight pull spokes for optimal balance and rigidity (OPTBAL)
• Elbow-less spokes make for a strong yet compliant wheel
• High lateral rigidity is produced with a wide flange spacing
• Labyrinth double-contact sealing effectively shuts out water and dirt
• Alloy cone with integrated steel Borozon treated bearing races - super mirror finish reduces friction
• Freehub uses direct engagement interlocking faces for quick power transfer
• Cold forged, machined aluminium hub shell and oversized 7075 alloy axle keep the wheel weight to a minimum
• 700C clincher compatible
• Rear: 142 x 12 mm axle
• Front: 100 x 12 mm axle
• 11-12-speed compatible rear wheel
• Tubeless Compatible. Supplied taped with tubeless valves. 
• Front: 698g
• Rear: 872g