Shimano DEORE XT M8100 1700mm rear disc brake:Includes right brake lever with 1700mm hose and brake caliper with pads, delivered without bleeding. Focused on weight reduction and mountain biking-friendly braking power, the lever provides intuitive modulation that allows the rider to explore their limits with confidence.It has resin pads WITHOUT fins (they are not ice-tech) and does not include a disc.  Shimano DEORE XT BR-M8100 Right Rear Brake Lever 1700mm:Includes brake lever with 1700mm hose and brake caliper with pads, delivered without bleeding. Focused on weight reduction and mountain biking-friendly braking power, the lever provides intuitive modulation that allows the rider to explore their limits with confidence.It has resin pads WITHOUT fins (they are not ice-tech) and does not include a disc. Characteristics:

• Optimized lever axis position with additional contact point and improved ergonomics
• The cockpit layout is more flexible and more optimized for the I-SPEC EV drive
• High rigidity
• 10% stiffer than M8000 even at high temperatures
• Faster brake application with shorter free travel
• Rider-friendly fit
• Tool-less reach adjustment
• Free travel adjustment
• Excellent modulation improves control
• Faster piston retraction
• Light
• two pistons
• Quick and easy assembly
• Banjo type connection and internal hose routing