These wheels have a Microspline freehub which is essential if you want to run a 12 speed Shimano cassette

2-STEP ZIP SYSTEM – better organisation of contents

SRAM® (including 1x)

and durability as well as providing protection for both your tyre and rim

The height adjustable upper guide is co-moulded with soft rubber to keep operations silent

Vorsprung Secus Fork Air Spring Upgrade Kit - Fox A3 PDP|Colour These wheels have a MicrosplineFor 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