Industry Nine Hydra Rear Endcaps

No, these specific endcaps are designed exclusively for the Hydra rear hub platform. They will not fit older Torch or other legacy hub models.

Generally, no. Industry Nine Hydra endcaps are designed to be press-fit by hand. You should be able to pull the old ones off and push the new ones on without specialized tools, though a light coating of grease on the O-rings is recommended for a smooth installation.

These endcaps are part of the conversion process, but they are not the only component required. To switch between HG and XD standards, you must also replace the freehub body itself; the endcaps simply secure the assembly once the correct freehub is installed.

The weight can vary slightly depending on the specific axle standard you are converting to, such as 12x142mm versus 12x148mm Boost. While these endcaps are lightweight, the precise machining required for different axle interfaces results in minor variations.

If you notice excessive play or 'wobble' in your rear wheel even after the thru-axle is tightened, your endcaps may be worn. Inspect the O-rings for cracking or flattening, as these seals are critical for keeping debris out of the hub bearings.