ProX 's new sintered metal brake pads are produced under a very strict sintering process. Metallic particles are fused together in combination with heat and pressure. The result is ProX pads resist very well in high temperatures and under heavy braking offering better durability than organic pads. Also ProX pads last longer and are designed for a bit softer front braking and a bit harder back braking than the original ones. ProX brake pads gamma covers all MX, Dirt bike and ATV motorcycles.