Upgrade your cycling experience with the Colnago SR9 Alloy Handlebar Stem, designed to fit the C64 and other models. This black 90mm stem has a clamp diameter of 31.8mm and is perfect for riders looking to enhance their performance. Crafted with quality and precision, this stem is a must-have for any serious cyclist.   To note - the internal cabling plastic piece is not included in this brand new, never used stem - official part.