RockShox Domain/BoXXer Coil Spring

This specific coil is designed exclusively for 35mm RockShox Domain and BoXXer forks manufactured between 2010 and 2018. If your fork falls outside of this model year range or uses a different chassis diameter, this part will not fit.

In the RockShox ecosystem, the color coding on coil springs typically denotes the spring rate or stiffness. The red spring is generally considered a medium-firm option, but you should verify your specific rider weight requirements against the RockShox spring rate chart to ensure it matches your setup.

Installing a coil spring is a straightforward maintenance task if you have basic suspension tools, such as a cassette tool or socket set to remove the top cap. However, you will need to be comfortable with basic fork disassembly and have the correct suspension oil on hand to perform the swap properly.

Yes, over time, metal coil springs can lose their original tension or develop a slight set, which affects how the fork tracks and recovers. Replacing an aged spring with a fresh one restores the intended support and consistency, making the fork feel more responsive and predictable on rough terrain.

While the spring may have a light protective coating, it is best practice to apply a fresh, thin layer of high-quality suspension grease before installation. This helps prevent noise and ensures the spring moves smoothly within the stanchion tube.