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Hydra 2 Classic Rear Hub

Hydra 2 Classic Rear Hub

Completely re-engineered using insights gleaned from more than 100,000 original Hydra hubs in the field, Hydra 2 features a newly designed 65% thicker axle, larger 6903 bearings with new labyrinth seals, and enlarged pawl pockets that ensure bombproof durability under the most demanding conditions.


  • 6 Pawl Hydra 2 Freehub Body provides a groundbreaking 870 P.O.E. Hydra 2 Freehub body engages every .41 degrees yielding telepathic control
  • Refined drive ring and increased tooth counts on each pawl provide increased relability and engagement with less drag
  • Designed specifically for trail, enduro, and downhill riders with the strength to handle full-power ebikes
  • Scalloped flanges on Hydra2 j-bend hubs increase overall strength, and remove excess material for a lighter, stronger hubshell
  • Revised axle design is 65% thicker with an improved stress washer design
  • Larger, 5.5mm pawl pockets that evenly distribute force 26% better, preventing deformation of the pockets over years of use
  • Full-contact radial lip seals paired with proximity dust shields keep grit and grime out, and lubrication in
  • Durable 6903 bearings are used throughout for smooth, long-lasting performance
Select Options
From $164.50

Original: $470.00

-65%
Hydra 2 Classic Rear Hub

$470.00

$164.50
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Description

Completely re-engineered using insights gleaned from more than 100,000 original Hydra hubs in the field, Hydra 2 features a newly designed 65% thicker axle, larger 6903 bearings with new labyrinth seals, and enlarged pawl pockets that ensure bombproof durability under the most demanding conditions.


  • 6 Pawl Hydra 2 Freehub Body provides a groundbreaking 870 P.O.E. Hydra 2 Freehub body engages every .41 degrees yielding telepathic control
  • Refined drive ring and increased tooth counts on each pawl provide increased relability and engagement with less drag
  • Designed specifically for trail, enduro, and downhill riders with the strength to handle full-power ebikes
  • Scalloped flanges on Hydra2 j-bend hubs increase overall strength, and remove excess material for a lighter, stronger hubshell
  • Revised axle design is 65% thicker with an improved stress washer design
  • Larger, 5.5mm pawl pockets that evenly distribute force 26% better, preventing deformation of the pockets over years of use
  • Full-contact radial lip seals paired with proximity dust shields keep grit and grime out, and lubrication in
  • Durable 6903 bearings are used throughout for smooth, long-lasting performance
Hydra 2 Classic Rear Hub | Sierra Bicycle Supply