The Hydra2 Enduro Carbon is Industry Nine’s most advanced enduro race wheelset to date. With front- and rear-specific carbon layups, it strikes the perfect balance between comfort and the rugged durability required for enduro racing, all while keeping weight minimal to conserve energy during those long rides. Hydra2’s instant engagement lets you accelerate swiftly when the trail changes, shaving off crucial seconds that could land you on the podium. Industry Nine Hydra 2 Enduro Carbon Features A 65% thicker axle that’s been redesigned to dissipate stress more effectively Larger 6903 bearings throughout , and a new labyrinth channel and full-contact radial lip seal to keep out elements that cause premature bearing wear Quicker 0.41° engagement and 60% less coasting drag than its predecessor A new, foolproof design to ensure consistent bearing preload, regardless of variations in axle tightness Larger, 5.5mm pawl pockets that distribute force 26% better, preventing deformation of the pockets over years of use Tougher metal for the drive ring and an extra tooth on each pawl, guaranteeing Hydra2 can easily handle the torque of the most powerful e-bike motors Hydra 2 Enduro Carbon Specs Built For: High-Level Enduro Racing Position: Front & Rear Rim Model: We Are One 325 front, 310 rear Hub Model: Hydra 2 Spoke Model: i9 direct thread, straight-pull alloy Weight: 1715 grams (27.5"), 1780 grams (29") Rider Weight Limit: 290 pounds or 132 KG Warranty: 2 Years ( Click here for details ) Hydra 2 Hub Rotor Mount: 6-bolt Holes: 32 hole Points of Engagement: 870 Drive Ring: 145 tooth Pawls: 6 Engagement: .41 degrees Material: Aluminum We Are One 325/310 Rim Tire Width: 2.30" - 2.60" Inner Rim Width: 32.5mm front, 31.0mm rear Outer Rim Width: 40mm Included Valve: 40mm Presta Material: Carbon Rim Tape: Included and installed Tubeless Ready: Yes Rim Weight: 450 grams front ,550 grams rear (29"), 530 grams rear (27.5") Direct Thread Alloy Spoke Shape: Straight-Pull Material: Machined Aluminum Nipple: i9 Integrated, Aluminum Spoke count: 32