The Fox SLS Spring is a replacement part for you Fox Rear Shock. SLS stands for "Super Light Steel", which is a lighter option than the standard steel springs. These springs are actually lighter than titanium, but at a more affordable price.
A proprietary surface treatment and stress relief process removes residual stresses from the spring, allowing them to withstand higher stresses. Each spring is optimized by using a smaller wire diameter and fewer coils, creating a lighter spring.
All SLS springs are orange and are marked with their spring rate in lbs/in (in 25 lb increments) and the maximum travel of the shock that they are designed to be paired with.











