Industry Nine

Hydra 2 Boost Endcap

What Our Gearhead® Experts Are Saying:

"I like that these Hydra 2 endcaps are modular instead of bundled. It makes replacing a damaged side easy and lets you build exactly the setup you need. Just be sure you’re pairing the correct two compatible endcaps to complete your front hub configuration."

When we’re dialing in a front hub to match a new fork, axle standard, or rebuild, Hydra 2 front hub endcaps give us the flexibility to adapt without replacing an entire wheel. These small but critical components let us fine-tune compatibility across Boost, Torque Cap, and standard axle configurations, keeping our Hydra 2 hubs in service as setups evolve.

Each Hydra 2 endcap is precision-machined to maintain proper hub spacing, bearing preload, and smooth rolling performance. Endcaps are sold individually, which means building a complete front hub setup requires purchasing two compatible pieces—one for each side of the hub. This modular approach makes it easy to replace a single lost or damaged endcap or assemble a fully compatible pair tailored to your specific axle and hub standard.