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Lightweight HollowTech II 105 10-speed chainset
Innovative HollowTech forged and anodised aluminium crank
arms utilise a hollow design that minimises flex and keeps
the weight low.
• The chainring teeth have been developed to work in
conjunction with the CN-5701 chains for increased contact
to provide greater efficiency and improved power transfer.
• HollowTech II allows the bottom bracket bearings to
be spaced wider apart (outboard from the frame), enabling
the use of larger bearings and an increased axle diameter.
• The system allows for easier installation, adjustment,
and maintenance.
• Lightweight anodised SG-X aluminium chainrings for
smooth and precise shifting.
• For use with ST-5700, ST-6700 or ST-7900.
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