Full Carbon 51cm, 53cm, 55cm, 57cm Item : FLX-FR-601Full Carbon 3K Matt Cyclocross Frame + ForkSize: 51cm, 53cm, 55cm, 57cmBB Type : BSA English Thread, BB30Headset Size : 1 1 /2" Head Tube Reduced to 1-1/8" Fork Tube Threadless Headset FLX-FR-601 Full Carbon 3K Matt Cyclocross cross Frame Fork SIZE:51cm, 53cm, 55cm, 57cm