Zipp Freehub KIT 188 11S SRAMZipp Freehub KIT 188 11S SRAM The Zipp Freehub KIT 188 11S SRAM brings the performance and reliability Zipp is known for, engineered for riders who want dependable gear that stands up to real world use. SERVICE Freehub kit 188 11S SRAM. Built to Zipp's exacting standards, it's a practical upgrade whether you're heading out for a training ride, a weekend adventure, or the next race. The Zipp Freehub KIT 188 11S SRAM is in stock now at Mackay Cycles.