18 C TO TOP OF THE SEAT POST CLAMP. 22 C TO C TOP TUBE.The item "RARE VINTAGE klein attitude 18 SHIMANO XTR CODA SPIN IN VERY NICE CONDITION" is in sale since Thursday, April 16, 2020. This item is in the category "Sporting Goods\Cycling\Bicycles". The seller is "racing1688" and is located in Westminster, California. This item can be shipped to United States.