Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks
Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks

Vorsprung Secus Fork Air Spring Upgrade Kit - Fox & Rockshox Forks

VG-SECUS-FOX-A2

Regular price$455.00
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Model
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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)
  • Proprietary Midstroke Support Valve improves predictability and support beyond the sag point
  • Reduced lower leg pneumatic ramp means better scalability of the air spring, particularly for light riders who previously struggled to use full travel
  • Plush and predictable like a coil, bottomless like an air spring
  • 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
  • Allows more lower leg bath oil to be used for superior lubrication
  • Considerably lighter than coil conversions - adds approximately 130g
  • Simple setup - inflate fork, bounce on it a few times, press MSV charge button, go ride
  • Compatible with OEM volume spacers for end-stroke progression adjustment
  • Compatible with other aftermarket top-cap systems such as DSD Runt and MRP Ramp Control
  • Lower compression ratios mean a more consistent spring rate
  • Transferrable between any Secus-compatible forks with only a footstud to change at most
  •  

     

    Initial stroke - enlarged negative air spring chamber delivers a soft, supple initial stroke for ultimate small bump compliance

    Midstroke - where traditional air spring rates drop off in the midstroke, our proprietary Midstroke Support Valve technology boosts the midstroke spring rate to maintain linearity, for support, predictability, ride height and compliance

    End stroke - enlarged lower leg volume reduces overall progression even at higher pressures and allows for a wider range of end-stroke ramp options to be utilised with standard fork volume spacers.

    COMPATIBILITY:

    Fork Year & Specification Secus Variant
    Fox 32 2018+ (unless footnut on spring side is recessed) Fox A1
    Fox 34 2018+ (unless footnut on spring side is recessed) Fox A1
    Fox 36 2018+  Fox A1
    Fox 38 2021+ Fox A2

    Fox 40

    2018+ (Note: Installation tool sold here, air spring is difficult to disassemble) Fox A3
    Fox 32 StepCast  Not Compatible
    Fox 34 StepCast Not Compatible
    Marzocchi Z1 2019+ Fox A1
    Rockshox Pike / Revelation (2014-2018)

    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. The BIP (Bananas in Pyjamas) B1/B2 sealheads can be included in the kit by selecting the dropdown option in 'Tools Required', and may also be purchased separately here. Secus is not compatible if air side footbolt is recessed in the lowers (some 2018 forks).

    Rockshox A2
    Rockshox Pike / Revelation (2019-2020)

    Compatible unless footbolt on spring side is recessed. No replacement sealhead needed if using stock air shaft (B1/B2).

    Rockshox A2
    Rockshox Pike / Revelation (2021+) 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. The BIP (Bananas in Pyjamas) B1/B2 sealheads can be included in the kit by selecting the dropdown option in 'Tools Required', and may also be purchased separately here. Rockshox A2
    Rockshox Lyrik / Yari (2016-2018) 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. The BIP (Bananas in Pyjamas) B1/B2 sealheads can be included in the kit by selecting the dropdown option in 'Tools Required', and may also be purchased separately here. Rockshox A2
    Rockshox Lyrik / Yari (2019-2021) Compatible. No replacement sealhead needed. Rockshox A2
    Rockshox Zeb (2021+) Compatible. No replacement sealhead needed. Rockshox A2
    Rockshox Boxxer (2019+) Compatible. No replacement sealhead needed. Rockshox A2
    Any year forks with 35mm C1 (2021+ style) air shaft kit installed (This does not apply to 38mm Zeb air shafts) Requires Bananas In Pyjamas (BIP) Sealhead to be installed. The BIP (Bananas in Pyjamas) B1/B2 sealheads can be included in the kit by selecting the dropdown option in 'Tools Required', and may also be purchased separately here.

    Free shipping available to Canada only.

    US shipping calculated at checkout.

    For Worldwide shipping please email info@s4suspension.com

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