This pad replaces OEM # 54813090100 For several years now, the EBC "X" series pads have been the choice of top enduro and motocross riders for certain conditions around the world. The main advantage of this type of material is its lack of heat generation or conduction, which keeps both the rotor and the caliper cool. Top enduro and hare scrambles riders prefer this material for fast and dry riding conditions. These pads are also TUV tested and KBA approved for street use on enduro bikes. The "R" series pads, a heavy duty sintered pad that has become the aftermarket standard. High durability, resistance to contamination by mud, water, sand, and grit, reduced disc damage, and long life make the "R" pads very popular. Rear pads for most full-sized offroad models 2004 up, and 250SX-F 2006 up. Requires refitting old shim and insulator.