Sirrus 4.0 Color:Satin Black / Smoke / Black Reflective User adjustable stiffness lets you

User adjustable stiffness lets you dial in the right feel to match your riding style

It's one of the first things you notice at the top levels of motorsport tools

Helix Plus and Helix Steel chainrings

A single external compression adjuster that simultaneously adjusts High and Low speed damping characteristics

Flap features small zipper pocket & webbing daisy chains for additional lash points

Sirrus 4.0 Color:Satin Black / Smoke / Black Reflective User adjustable stiffness lets youYou have places to go, people to see, and fitness goals to achieve. We get itlife moves pretty fast, so it's a good thing we made Sirrus to help you with all of it. Wherever you're heading, Sirrus will take you there. Sirrus features a super light aluminum alloy and carbon fiber construction, as well as reliable MicroSHIFT components that are built to withstand years of daily abuse on the world's pavement. Powerful hydraulic disc brakes provide