Fox Suspension SLS Spring

The SLS (Super Light Steel) spring uses a proprietary alloy that allows for a smaller wire diameter and fewer coils. This construction makes it significantly lighter than a standard steel spring, often rivaling the weight of titanium options without the high cost.

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

Not at all. Fox uses an advanced surface treatment and a specific stress-relieving process during manufacturing to ensure the spring maintains its structural integrity and service life despite the reduced material volume.

Spring rate selection depends on your rider weight, frame leverage ratio, and personal preference for suspension feel. We recommend using a suspension calculator specific to your bike frame to determine the correct rate before purchasing.

Like any coil spring, it is largely maintenance-free. However, you should periodically check that the spring collars are snug and that there is no debris trapped between the coils to prevent any potential noise or wear.