Other cranksets will require bearings. X Small see photo for measurements. Seat tube Center of BB to Center of Frame 43cm. Seat tube from center Bottom Bracket to Center of Seat Rails 62cm (can be raised up to 2.5cm additional) or can be cut to lower than 62cm. The item "Wilier Cento Uno Carbon Frame Fork Set Campagnolo bottom Bracket XS 43cm" is in sale since Friday, September 11, 2020.This item is in the category "Sporting Goods\Cycling\Bicycle Frames". The seller is "lvgreatfinds1" and is located in Las Vegas, Nevada. This item can be shipped worldwide.