SPECIFICATIONS Size : 52CM 54CM Frame : Aluminum Alloy, Replaceable Derailleur Hanger Fork : Carbon 700c Road Bottom Bracket : SHIMANO SMBBR60  Crank Set : Shimano 105 FC-5800 Front Derailleur : SHIMANO 105 FD5800 Rear Derailleur : SHIMANO 105 RD5800 Shifters : SHIMANO 105 KST5800 2 x 11 Speed Chain : SHIMANO CWHG601 Rims : Shimano WHRS010 Front 20H, Rear 24H Hubs : Shimano WHRS010 Front 20H, Rear 24H Tires : Maxxis Detonator 700x23C Brake Set : Shimano 105 BR5800 Head Set : Neco Threadless Handle Bar : Raleigh Alloy Road Grips : Fizik Black Tape (Soft Touch Foam With Great Grip) Stem : FSA Alloy Seat Post : Promax Alloy 27.2mm Saddle : Selle Royal Saba Road Seat Clamp : Alloy (Bolt) Brake Lever : Shimano 105 ST-5800 Freewheel : SHIMANO 105 CS5800 - 11-Speed 11-32T