This is a very nice aluminum frame triathlon bike size 52, suitable for riders between 5'5 to 5'8. 18 speed Shimano 105 drivetrain (2x9), FSA crankset (53/39), QR Carbon Fiber fork, Profile Design Aerobars, Profile Design saddle, Xero Velocity 650c wheels and Michelin 640x23 tires. Great entry level bik...