Take your mountain bike performance to the next level. Our online store is under construction but these parts are generally in stock. Please call 385-865-5896 for availability.


    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.

    Purchase Options 

    Dual chamber air spring cartridge. The patented design provides a near linear compression curve for a “coil-like” feel while maintaining infinite adjustability. 

    • Easy Drop-In Installation

    • Half the price of a coil conversion

    • Coil like suppleness and mid-stroke support

    • Built in tunable progression or “bottom out resistance”

    • 1/2 Lb Lighter than coil conversions and only 20 grams heavier than same amount of tokens or spacers

    • Maintains your fork’s air spring compatibility.

    Purchase Options 

    We install Nd Tuned steer tubes in store only.

    Service Request 
  • EXT USA Dealer

    We service and sell EXT high end suspension.