Cortex OS

• Uses x2 OVERSIZE rear hub bearings for increased smoothness and durability • Strong, grind friendly hub • Hex key inner axle for easy maintenance • Narrow flange for better spoke clearance when grinding • Includes x2 nylon/fiberglass hub guards • Uses much larger bearings typically found in rear hubs • Features a longer 35mm bolt to accommodate plastic pegs and for a stronger female bolt setup