One kit takes care of the entire wheelset. Six steel bearings for the front hub, rear hub and freehub provide everything needed for a complete bearing overhaul of Industry Nine Hydra2 hubs.

MKMB04 20mm XD/HG/SS

• 2 x 61805 steel bearings
• 2 x 61903 steel bearings
• 1 x 152610A3C3 steel bearing
• 1 x 15267A5 steel bearing

MKMB05 20mm MS

• 2 x 61805 steel bearings
• 2 x 61903 steel bearings
• 1 x 152610A3C3 steel bearing
• 1 x 3802A3 steel bearing