Campagnolo Super Record Wireless Crankset 172.5mm 12 Speed 48 32t Campy 121 88 Asym BCD Ultra Torque Spindle Carbon MFPN=306 37222 A140 }Odyssey Aitken K Lyte Tire }Odyssey Aitken K Lyte Tire 2 ISO Diameter 622 Road 29" ISO Width (mm) 23 ISO Width (mm) 24 ISO Width (mm) 25 ISO Width (mm) 26 ISO Width (mm) 27 ISO Width (mm) 28 Labeled Size 700 x 23 28 Shaft Type Smooth Tube Compound Thermoplastic Elastomer Valve Presta Short 32 40mm Valve Core Removable The Super Record Wireless crankset is part of the new transmission designed to offer an innovative combination scheme (34 50 32 48 29 45) which in synergy with the new cassettes offers the widest spectrum of gear inch ratio The Super Record Wireless crankset has a lighter hollow structure and uses the Ultra Torque locking system with a titanium axle to transfer to the transmission all the force applied on the pedals by the cyclist