Building on Hope’s 30+ years of manufacturing hubs, the Hope Pro5 Freehub XD Assembly is the combination of all ourexperience to meet and exceed the demands of current and future bike technology.The Pro 4 provedto be one of the most reliable and versatile hubs on the market. The Pro 5 builds on this with improvements throughout, offering the right balance between speed of pick-up, load capacity, durability and drag.One of the key design objectives for the Pro 5 was the reduction of drag in the drive mechanism. This has real world riding benefits and was achieved by upgrading the sealing with a new zero drag labyrinth seal, and an improved ratchet and pawl system, with new springs. Both greatly reduce drag as well as increase durability and load capacity when compared with the Pro 4 ... More info