I ride a 54 cm cannondale road bike, and a 50 cm cannodale cross bike. they have quite a high standover, but it fits me quite well. i also have 2 ridley supercross' that are 52 cm. hope this helps. AS for the headshock, it would be ok for commuting/ trail riding but for cross racing a bit on the heavy side i think.jcweb80 said:Does anyone out there ride one of these, How do they fit, I can't really figure out what size to get, normally I ride a 56cm road bike, and what do you think of the ride, is the Headshock really a lot of unneccessary weight, or is it ok?