Vorsprung Secus Fox A1 Fork Air Spring Upgrade Kit
summitcyclesau

Vorsprung Secus Fox A1 Fork Air Spring Upgrade Kit

$449.00 $299.00 Save $150.00
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  • Low stock - 2 items left
  • Backordered, shipping soon
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 soft, supple initial stroke for ultimate small bump compliance (yes, even compared to the Luftkappe)
  • Considerably lighter than coil conversions - adds approximately 130g
  • Proprietary Midstroke Support Valve improves predictability and support beyond the sag point
  • Simple setup - inflate fork, bounce on it a few times, press MSV charge button, go ride
  • Reduced lower leg pneumatic ramp means better scalability of the air spring, particularly for light riders who previously struggled to use full travel
  • Compatible with OEM volume spacers for end-stroke progression adjustment
  • Plush and predictable like a coil, bottomless like an air spring
  • Compatible with other aftermarket top-cap systems such as DSD Runt and MRP Ramp Control
  • Allows full use of travel in both directions - fully extends to topout without any quibbles (including on Debonair B1 air springs) and fully compresses without excessive ramp
  • Lower compression ratios mean a more consistent spring rate
  • Allows more lower leg bath oil to be used for superior lubrication
  • Transferrable between any Secus-compatible forks with only a footstud to change at most

 

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