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Vorsprung

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 “wall of force” harshness that excessively progressive springs create.

For Full Information on the Vorsprung Secus click HERE

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