The Shimano MTB Optislick Gear Cable Set is a complete cable replacement kit for Shimano XT M8000 mountain bike gears. It combines low-friction OPTISLICK inner wires with SP41 outer casing for smooth, accurate gear changes. With all the cables and fittings in one pack, it provides a simple way to replace worn gear cables and restore shift performance.Key Features and Benefits:OPTISLICK Coated Inner Wires: An electrical coating creates a smooth surface on each stainless steel wire. This reduces friction and sliding resistance, helping the cables move freely for smooth, precise gear changes.Stainless Steel Inner Cables: The set includes two 1.2mm inner wires in 2100mm and 1800mm lengths. These provide the cable lengths needed for a full gear cable replacement while offering good resistance to corrosion.SP41 Outer Casing: The 3300mm outer casing uses a special directional wound design for high axial stiffness. This limits compression when the cable is pulled, helping each shift reach the derailleur with speed and accuracy.Internal Silicone Lubrication: Low-friction silicone grease runs along the inside of the outer casing. This reduces drag as the inner wire moves, helping maintain smooth shifting with less effort at the shifter.Polymer-Lined Casing: A polymer sheath lines the inside of the SP41 outer casing to help the inner wire slide with less resistance. This supports smooth cable movement and helps deliver a consistent response with each shift.Complete Cable Fitting Kit: The pack includes all the end caps and rubber shields needed for installation. These help protect the cable ends from dirt and moisture while providing a neat, secure finish.Worn or dirty gear cables can cause slow shifts and make it harder to select the right gear. Replacing the inner wires and outer casing together helps restore smooth cable movement throughout the system. The combination of OPTISLICK coating and stiff SP41 housing helps deliver a direct response from the shifter to the derailleur.The Shimano MTB Optislick Gear Cable Set provides everything needed for a full gear cable refresh on a compatible mountain bike. With low-friction cables, precise cable movement and all the required fittings, it is a practical choice for keeping your gears working smoothly.