What Our Gearhead(R) Experts Are Saying: "These kits are the easiest way to adapt or refresh a Hydra 2 hub when changing axle or frame standards. Everything you need comes in the box, the tolerances are spot-on, and once installed the hub feels exactly as it should. If you're doing a full conversion, buying the matched kit removes all the guesswork."When we're swapping forks, updating frames, or rebuilding wheels around a new standard, Hydra 2 endcap kits make the process clean and straightforward. Each kit is built as a matched pair, ensuring proper spacing, alignment, and bearing preload without mixing parts or second-guessing compatibility. It's the simplest way to keep a Hydra 2 hub rolling smoothly as standards evolve. Each kit includes two precision-machined endcaps designed to work together as a complete system. Whether converting between Boost and non-Boost, adapting to RockShox Torque Caps, or dialing in rear hub spacing for different axle and freehub standards, these kits preserve the performance, engagement, and reliability Hydra 2 hubs are known for. Installation is quick, fit is exact, and the result is a wheel that feels factory-correct.