Shimano Ultegra SL HollowTech II chainset offers a fine balance of light weight and rigidity with incredible shifting performance ideal for cycle racing, training or touring. The Shimano HollowTech II design allows the bottom bracket bearings to be spaced wider apart (outboard the frame) enabling the use of larger bearings and an increased axle diameter, there is also the benefit of easier installation , adjustment and maintenance. The Shimano Ultegra SL chainset has a lightweight and rigid steel bottom bracket axle with SG-X aluminium anodized 50 and 34 chainrings with Aluminium chainring bolts.

Weight: 710 g (170 mm)