Ultegra HollowTech II chainset offers a fine balance of light weight and rigidity with incredible shifting performance
The Features of the Shimano Ultegra 10 Speed Triple Chainset FC6603 are:- HollowTech II allows the bottom bracket bearings to be spaced wider apart (outboard the frame) enabling the use of larger bearings and an increased axle diameter
- Their is also the benefit of easier installation , adjustment and maintenance
- SG-X aluminium anodized chainrings
- Available in 170 mm, 172.5 mm, 175 mm
- Bottom bracket not supplied