TRP Sintered Metallic Brake Pads Sintered metallic brake pads are perfect for long demanding descents that generate tons of heat. When brakes get hot, metallic pads are the best option, plus they&';ll last longer before needing replacement. If you&';ve got an E-Bike, metallic brake pads are your best friends! Alloy backed replacement pads Sold as a pair and includes pad retaining spring Fits 2018+ TRP 4 Piston Hydraulic Disc Brakes Also fits Shimano Saint, Zee and 4-Piston XTR/XT/SLX/Deore calipers