Frame assembled with high modulus (HM) carbon fibre composite with a 3K twill finish and monocoque carbon fibre lugs, produced and Made in Italy. Available in 14 traditional sizes & 8 sloping sizes. Custom sizes on request. Front Triangle with Master bi-conic shape tubing CNC Titanium Bottom Bracket insert. B-stay carbon fibre and HP System carbon fibre rear seat stays. Colnago Carbon 75 1” 1\8 fork. Seatpost diameter: 28.0 mm Characteristics: A versatile and reliable frame for professional and amateur riders. C50 is the most winning frame among all Colnago carbon models.