Fox Suspension SLS Spring

The SLS (Super Light Steel) spring uses a proprietary alloy that allows for a thinner wire diameter and fewer coils. This design significantly reduces weight, bringing it much closer to the performance profile of a titanium spring without the associated cost.

Yes, this spring is designed with a 35mm inner diameter, making it compatible with a wide range of major shock brands including Marzocchi, DVO, MRP, and X-Fusion, in addition to Fox units.

The surface treatment is a stress-relieving process that helps the metal resist fatigue over time. It essentially extends the lifespan of the spring by preventing the material degradation that can occur under the high-stress conditions of aggressive mountain biking.

You must match the spring's stroke length to your shock's stroke. This specific spring requires a shock with a 3.65-inch stroke; using it on a shock with a different stroke length can lead to coil bind or improper suspension travel.

No, the spring rate is fixed at 325lbs. If you find that this rate is too soft or too firm for your riding style or body weight, you will need to swap to a different spring rate rather than attempting to adjust the current one.