EBC Brakes FA617R R Series Sintered Disc Brake Pad For the ultimate durability EBC presents it's R series high density pads R Series heavy duty ATV and moto-x pads have become an aftermarket standard, offering high durability, reduced disc damage, long pad life, and a high resistance to contamination by mud, water, sand and grit etc The sintered copper alloy pad made in the USA sintered production plant to deliver a medium to high friction pad, at an attractive price point that lasts well in all conditions R Series pads are equally well applied to two wheel and four wheel machines, and are designed for minimum rotor abrasion so they will not damage brake rotors Well liked amongst ATV riders, especially in muddy conditions where the rear rotor hangs down in the mud and chews through lower quality pads in a weekend