Raleigh Professional 1974 Nominal Size 21 1/2" center-to-center or 56cm C-T Included picture displays the bike's original specs. The following have been upgraded from the original: - Mavic Mod-E Clincher Rims - Panaracer Pasela 27x1 Tires - Cinelli Stem 100mm - Cinelli Giro D'Italia 64-40 Bars - Sugino Mighty Comp 42T Inner Chainring - Suntour CX 14-28 Freewheel - KMC Z72 Chain - Bottle Cage - Sigma Computer - Blackburn Stopblock Bike has been recently tuned-up. Beautiful, smooth ride from a classic, top-of-the-line bike . This bike has been checked over by a master mechanic and is ready-to-ride.