Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
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 âwall of forceâ harshness that excessively progressive springs create.
For Full Information on the Vorsprung Secus
Fox A1 - 32mm, 34mm & 36mm 2018 / Marzocchi Z1 2019
Fox A2 - 38mm 2021
Fox A3 - 40mm 2018
Rockshox A2 - Pike / Revelation / Lyrik / Yari / Zeb / Boxxer - Requires 2019-20 (B1/B2) Debonair Airshaft update to be directly compatible, or you may use the (2021) C1 Debonair Airshaft and replace the sealhead with the BIP (B1/B2) sealheads.
INSTALLATION MANUAL for FOX A1 - DOWNLOAD PDF
INSTALLATION MANUAL for FOX A2 - DOWNLOAD PDF
INSTALLATION MANUAL for ROCKSHOX A1 - DOWNLOAD PDF