Vorsprung Secus - Fork Air Spring Upgrade Kit

The Vorsprung Secus Fork Air Spring Upgrade Kit is an external air can that helps create more negative air space, creating a truly better spring rate for compatible air forks. Check out our blog article where we review the secus and go into detail about how the Secus feels & works. **Please Make sure to let us know the exact fork you have.** Compatible with Fox A1, Fox A2, Fox A3 air springs & RockShox A2. If you have Rockshox A3 please contact us. For the first time, we created an air spring with a truly better spring rate, everywhere in the travel, than a coil. The Secus upgrade delivers the first and only air spring system to really come indistinguishably close to the linear spring rate of a coil fork for the entire first 2/3rds of its travel, with the advantage of a gentle end stroke progression to prevent bottoming without the “wall of force” harshness that excessively progressive springs create. Secus Advantages: An enlarged negative air spring chamber delivers a so