Shimano Cassette DURA-ACE,11-SPEED,11-25 EMGT An industry-first design

An industry-first design

Plastic covering protects the bicycle’s finish

The GORE-TEX INFINIUM™ outer shell isn't as beefy as other materials in the GORE-TEX line

Ultegra CS-6600 cassettes with a 13-16-tooth first-position cog are not compatible with Dura-Ace FH-7800 hub or WH-7800 wheel

The SOL Emergency Bivy w/Rescue Whistle and Tinder Cord is a lightweight insurance policy for backcountry emergencies

Shimano Cassette DURA-ACE,11-SPEED,11-25 EMGT An industry-first designUsing a carbon fiber and alloy spider and five titanium sprockets, the DURA ACE R9100 cassette provides accurate shifting and light weight to the most discerning road cyclists on the planet.