SKU: 22533425462

Vorsprung Secus air spring upgrade kit - Fox and RockShox

$159.30 $177.00
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

Vorsprung Secus air spring upgrade kit - Fox and RockShoxFor 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

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

    •  
    Three Stages of Control
    By independently optimising the beginning, middle and end portions of the stroke, the Secus gives you the linear-to-progressive spring rate that coil springs and traditional air springs alike wish they had. 

  • 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.

    •  
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 22533425462

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    4.4 ★★★★★
    Based on 17 reviews
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    Lyndzie Legg
    Massapequa, US
    ★★★★★ 5
    Postpartum mommies! Very flattering!!
    Special Size: with Contrast Trim, Size: Medium, Color: Black/White
    Quality item!! I would compare these to CRZ YOGA. They do not stretch, not see through, and feel buttery soft. I have only used them working out in a reformer pilates class in which I did not notice the leggings falling or the bra stretching. I would size down on the bra. I am a postpartum mommy and purchased a medium and I am nursing. It still was a little too big for my liking. So I went with a small on this order and it fit perfectly. The white lining on the bra and leggings I feel bring a flattering look to my waist for those ladies looking that that aspect. They pulled in all the right parts without creating any spill over. It might not be useful for a high impact workout like running or spinning but any weight lifting or Pilates-type classes it would be perfect for! I bought another set I love them so much. I ran them in the washer and hung dry them as I do all my fitness clothing items.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 5, 2025
    J
    Verified Purchase
    Joycie
    Natrona Heights, US
    ★★★★★ 5
    “Wonder”ful Bra!
    Special Size: without Contrast Trim, Size: Large, Color: Bright Red
    These (I have several in great colors. This one is red). I love it- looks neat and polished under anything you pair it with! Comfortable and quite soft!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 3, 2026
    J
    Verified Purchase
    Jennifer
    Birmingham, US
    ★★★★★ 4
    Tight band
    Special Size: without Contrast Trim, Size: Small, Color: Black
    The band is a little tight on my ribs but not uncomfortable enough not to wear it. I would suggest sizing up
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 27, 2026
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    Verified Purchase
    Caroline G.
    Pawtucket, US
    ★★★★★ 5
    Pretty and supportive
    Special Size: without Contrast Trim, Size: Medium, Color: Ocean Blue
    Very pretty and supportive. Love the blue. Perfect length for higher waisted leggings.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 10, 2026
    M
    Verified Purchase
    McKenzie Connelly
    Louisville, US
    ★★★★★ 5
    Nice quality at a great price
    Special Size: without Contrast Trim, Size: X-Large, Color: Emerald Green
    Fits a little loose
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 8, 2026

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