The Shimano Deore XT BR-M8100 is a hydraulic disc brake set for the rear wheel, featuring a black aluminum construction. This set includes a disc brake caliper, a right-side two-finger brake lever, a 170 cm long brake hose, and a set of G02A resin brake pads, with mineral oil used as the hydraulic fluid. It utilizes a post-mount system for installation and is compatible with the SM-RT81 and SM-RT86 brake discs. Weighing 299 grams, it is designed for mountain bikes and city bicycles, providing reliable braking power and durability under various riding conditions. The unisex design ensures broad applicability, focusing on precise control and long-term performance. The components are engineered for resistance to wear and consistent braking behavior, making it suitable for enthusiasts who value reliable upgrades or replacement parts. Installation requires standard tools, and it meets Shimano's specifications for quality and safety in bicycle components.