MTB Air Fork Upgrade

Plug and play insert for mountain bike air forks, powered by activated carbon.

Better small bump compliance, increased mid-stroke support and end stroke absorption. Reduces fatigue, improves grip and comfort, and unlocks more travel. Experience a coil-like feel without the weight penalty and with the tunability of air.
 
Heavy rider (90+kg) or on E-bike? Choose our Short model where available.

Activated carbon plug and play insert that installs like a token, but acts to increase the effective air volume of your fork, resulting in a more linear and less speed sensitive response. Our first edition inserts are assembled in our workshop, and tested and validated with our dynos and our team of test riders. 

What it does for your ride

• ⚡️  Better grip, comfort and small bump compliance without compromising sag 
• 💪  Linear, coil-like feel but with the adjustability and weight advantage of air
•  🤙 Unlocks more travel - make full use of your suspension
• ⭐️  Makes the fork more consistent and predictable by dramatically reducing speed sensitivity

Choosing between standard and short

Short variants have more ramp up, and are more suitable in the following cases:

• ✅  Heavy rider (over 90 kg with gear)
• ✅  Ebikes
• ✅  Run 3 or more tokens as your preferred setup
• ✅  Run high pressure (100 psi or more)
• ✅  Aggressive style / frequent bottom out  
• ✅  Typically ride large jumps where extra bottom out resistance is needed 

How it works

The activated carbon contained in our inserts acts to increase the effective positive chamber air volume in your fork. This happens due to its high porosity and internal surface area, that traps and releases air molecules, mitigating changes in pressure (more information on that process can be found on our Technology page). The effect is similar to what happens when you remove tokens: the spring rate is more linear, with less ramp up. This may be hard to believe, because it is a solid material after all!

The activated carbon in our inserts exchanges heat with the air, which mitigates the temperature changes in the air and dramatically reduces its speed sensitivity, resulting in a more consistent and predictable feeling.

When using our inserts, the charge pressure is usually increased, to achieve similar pressures at the end of stroke compared to the original setup. This results in the right amount of support, but with improved tracking, bump absorption and comfort provided by the more linear spring rate.