Upgrade your mountain biking performance with the FOX SLS Coil Rear Shock Spring - the ultimate lightweight, durable, and high-performance spring designed for serious riders. With a weight rating of 550 lb., a stroke length of 2.65 inches (67mm), and a sleek orange finish, this spring is engineered to enhance your shock's responsiveness and improve ride quality across varied terrain. Materials & Engineering Constructed from proprietary FOX Super Light Steel (SLS), this coil spring combines advanced materials with innovative surface treatment and stress relief processes. These features allow for a smaller wire diameter and fewer coils, resulting in a significantly lighter spring without compromising strength or durability. Ideal for demanding trail, enduro, and downhill riding, the FOX SLS coil spring optimizes weight savings and ride comfort. Component Compatibility & Versatility The 1.385" (35mm) inside diameter makes this spring compatible with FOX coil shocks as well as select models from Marzocchi, DVO, MRP, and X-Fusion. For precise fitment, consult the spring fitment guide here: [Spring Fitment Help](https://tech.ridefox.com/bike/general-info/918/all-sls-and-standard-steel-rear-shock-spring-information). Its versatile design ensures seamless compatibility across various suspension setups, boosting your bike's performance. Performance & Advanced Technology The lighter internal mass improves suspension response, reduces unsprung weight, and enhances overall trail handling. This spring's superior engineering offers improved shock control, increased energy efficiency, and better shock absorption, making it an excellent choice for aggressive riding conditions where responsiveness is critical. Style & Use Case Designed with vibrant orange springs, FOX SLS Coil Springs not only deliver exceptional functionality but also add a bold aesthetic to your bike setup. Perfect for aggressive trail riding, enduro racing, and technical descents, this spring provides re