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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
The Vorsprung Secus Upgrade Kit is a high-performance external air spring modification designed to transform the behaviour of your Fox A1 fork
and mount type before fitting
giving you ultra-supple small bump response
increasing consistency and service life
Axle: 15 × 110 mm Boost (Maxle Stealth)
ZEB A1 Air Spring Upgrade Kit DebonAir+ ButterCup No Reorder The Vorsprung Secus Upgrade KitThe ZEB DebonAir+ Air Spring Upgrade Kit with ButterCup is a complete air spring assembly for 2021 and newer ZEB A1+ forks. It replaces the existing air spring with the latest DebonAir+ system, offering improved ride height support, better small bump sensitivity, and a smoother transition through the travel. The revised air spring curve increases mid stroke support and maintains chassis stability under load, giving the rider more control and
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