PUSH Industries ACS3 Fork Coil Conversion Kit

The ACS3 kit replaces your air spring with a coil spring to drastically reduce friction, which results in significantly better small-bump sensitivity and a more supple, consistent feel throughout the travel. You gain the traction and predictable performance of a coil while retaining the bottom-out resistance typically associated with air systems.

The air bump stop acts as a secondary, adjustable air spring that only engages during the final portion of the fork's travel. This allows you to tune your bottom-out resistance independently of the coil spring, ensuring you have a plush ride without harshness on big hits.

The ACS3 kit is compatible with 2014-current FOX 36 and RockShox Lyrik forks. You should verify your specific fork model year and travel length to ensure the kit is compatible with your chassis before purchasing.

While the installation is straightforward for those comfortable with basic suspension maintenance, it does require specific tools for fork disassembly and damper service. If you are not experienced with internal suspension work, we recommend having a professional mechanic install the kit to ensure proper setup and safety.

Choosing the right spring rate depends on your rider weight, bike geometry, and personal preference for how supportive you want the fork to feel. PUSH provides detailed spring rate charts based on these factors, so it is essential to consult those guidelines or contact their support team to select the spring that matches your specific setup.

No, that is one of the main advantages of this conversion. Once you have the correct coil spring installed, you no longer need to check or adjust air pressure for the main spring, making your fork's performance consistent regardless of temperature changes or elevation.