Industry Nine

Hydra 2 Classic Boost Rear Hub - Micro Spline

The Hydra 2 hub is a complete re-engineering of Industry Nine's groundbreaking design, refined using data from over 100,000 Hydra hubs in the field. With a significantly stronger axle, larger bearings, and redesigned pawl pockets, Hydra 2 sets a new benchmark for durability and engagement.

Key Features

• Hydra 2 Freehub - 6-pawl system delivers an industry-leading 870 points of engagement, ensuring near-instantaneous 0.41-degree response for precise control
• Stronger Axle - Redesigned with a 65 percent thicker axle for increased stiffness and reliability under extreme loads
• Enhanced Durability - Larger 6903 bearings, new labyrinth seals, and full-contact radial lip seals keep out dirt and moisture while maintaining smooth performance
• Optimized Pawl Pockets - Enlarged 5.5mm pawl pockets distribute force 26 percent more effectively, preventing long-term wear and deformation
• Scalloped Flanges - J-bend hubshell design increases strength while reducing weight
• E-MTB Ready - Built to handle the power and torque demands of full-power e-bikes

Engineered for trail, enduro, and downhill riders who demand the highest level of engagement, durability, and responsiveness from their hub system.