Shimano Ultegra 6600 Chainset 52/39

Shimano Ultegra HollowTech II 10-speed chainset offers a fine balance of light weight and rigidity with incredible shifting performance.

• HollowTech II allows the bottom bracket bearings to be spaced wider apart (outboard theframe) enabling the use of larger bearings and an increased axle diameter
• There is also the benefit of easier installation , adjustment and maintenance
• SG-X aluminium anodized chainrings available in 53-39T / 52-39T (FC-6600 double), 52-39-30T (FC-6603 triple)
• Available in 165 mm (double), 170 mm, 172.5 mm, 175 mm
• Weight 833 g (53 / 39T, 170 mm including bottom bracket)