Helix E*Spec Direct Mount Chainring multi-speed freewheels As with all of our

As with all of our S-Works bikes

The Chamonix earned the highest 5-Star Virginia Tech® Helmet Rating from the internationally renowned Virginia Polytechnic Institute and State University

Download the manual below for further installation and compatibility

This chain is super lightweight with its patented chain configuration

Low-cut collar for reduced irritation

Helix E*Spec Direct Mount Chainring multi-speed freewheels As with all of ourHelix Core e*spec Direct Mount Chainrings feature a narrow wide tooth profile, for reliable chain retention and an extra long wear life. Helix Core e*spec rings are cold formed from steel and then heat treated to provide excellent durability and toughness, all at a price that's easy on your wallet.