The Eibach ESB10.250 is a nylon spring bag, a protective sleeve that wraps a 2.50-inch coilover spring to keep mud, sand, and water off the coils, the spring adjuster, and the damper shaft. The manufacturer sizes it for springs 8 to 10 inches long and sells it in pairs, so one order covers both corners of an axle. It belongs to Eibach's spring accessory line and is built for owners who run adjustable coilovers on street, off-road, or track setups.
Exposed coilovers collect grit between the coils, and that buildup can pack mud into the windings and seize the threaded adjuster, making preload and ride-height changes stiff or impossible. Eibach states the bag keeps the adjuster and damper shaft clean and links that to longer damper life. Compared with leaving the spring fully exposed, a purpose-made sleeve costs little next to a damper rebuild or a seized adjuster that has to be freed or replaced. For buyers searching for a 2.5 inch coilover spring cover, nylon spring boot, or coilover spring protector for 8-10 inch springs, this part number matches the manufacturer's listed dimensions. Measure your spring's outside diameter and length before ordering. Because the bag opens along its length, you can make shock and spring adjustments without removing it.
The manufacturer lists a 2.50 inch spring diameter and an 8 to 10 inch spring length for this part number. Measure your spring before ordering to confirm it falls within that range.
The manufacturer states that this spring bag is sold in pairs.
The manufacturer's page lists a 2.50 inch diameter for this part number, so the 0.03in wording does not match the manufacturer's dimensions. If you have any doubt about fit, confirm the dimensions with the manufacturer before installing.
