MDR Heavy Duty Clutch Springs SX 85 (03-ON) YZ80 85 (95-ON)

MDR Hardware, developed and distributed by MD Racing Products, is a UK-based brand specializing in high-performance hardware and components for motocross and enduro bikes. Known for its precision-engineered, rider-focused design, the brand uses high-quality materials, such as aerospace-grade aluminum, and CNC machining to create durable and lightweight parts. MDR offers a wide range of aftermarket products, including factory-style bolt kits, levers, and footpegs, that are trusted by professional racers and provide a "factory finish" for enthusiast riders.