Each component has been re-engineered to ensure maximum stiffness, performance and minimum weight.

The concept behind the new Shimano Dura-Ace R9150 groupset was to examine and improve every component to optimise the input and maximise the output. Or to put it another way, to minimise the energy loss between the effort a rider puts in and the performance he or she achieves.

Specification

• Dura-Ace R9100 172.5 Chainset
• Dura-Ace Di2 R9150 2x11 STI Shifter Set
• Dura-Ace Di2 R9150 Rear Derailleur
• Dura-Ace Di2 R9150 Braze On Front Mech
• Dura-Ace R9100 Road Brake Caliper Set
• Dura-Ace R9100 11-25T Cassette
• Dura Ace 11-speed Chain CN-9000 114 Links
• Brake & Gear Cables