Made in Denmark, WRP Motorcycle Brake Pads in Dual Sinter DS compound for top level racers and expert level trackday riders. Dual Sinter DS compound is the top secret factory front brake pad compound for world level racing using NRS technology which eliminates the use of glue between the pad and metal backing plate creating a virtually unbreakable bond. The DS compound is an ideal choice for racers wanting aggressive initial bite, predictable lever feel and long lasting pad as proven with extended life in World Endurance Racing. Works in the cold, best performance when hot. Racetrack use only. Very popular choice amongst racers in World Superbike, Moto2, Moto3, MotoAmerica, and expert club level racers in AFM, CCS, CMRA, WERA, and FMRRA. The DS compound is also referred to as the DS1 compound. 4/pc per set (bikes with dual calipers will require 2 sets).