Fabrizio Dragoni, CEO and riding engineer, was stunned When Mulally had his incredible chainless ride (VIDEO) and an year later when Aaron Gwin winning in Leogang: Chainless (VIDEO) and started to work on a new riding  scenario: chainless riding, maintaining the pedal stroke. 

Chainless riding means flowing sensations, absence of pedal kickback, extremely good braking performance and more. 

It also mean low bike “reactivity”, with a “more travel” feeling and saggy suspension while pumping. 

OCHAIN active spider can remove or reduce pedal kickback, isolating transmission effects from rear suspension when needed. Coming to the setup possibilities, there is no right or wrong, but a need for a deep comprehension of what makes things flow at their best. 

To dive into this understanding go on for nerds page.

Or read this article by Worldwidecyclery and Neko Mulally O-Chain Spider - Explained & Reviewed By Neko Mulally

Considering different riding preferences, OCHAIN now comes with three degree optional setups: 4°, 6°, 9° plus an optional 12° to buy separately. 

Balancing pedaling efficiency and gravity performances we reached our compromise. Compromises are due, contemporary mountain bikes are all born from them. Pedal kickback is one of the consequences, affecting rear suspension performance, despite the best engineers’ efforts.