The Extralite UltraFront SX front hub is Extralite's top-of-the-line front hub that weighs a mere 49g. The hub flanges are designed to handle the stress of radial lacing, and the hub flanges self-align under lacing stress to minimize torsional forces.

Weight: 49g!
(Actual weight on our scale, not the manufacturer's claimed weight. Extralite also claims 49g.)

Pair this feather-weight front hub with the matching Extralite UltraRear SX Rear Hub and you'll be the envy of every gram-counting biker out there. The set of these hubs weigh 181g. For comparison sake, a Shimano Dura Ace rear cassette hub weighs 262g and a Dura Ace front hub weighs 188g. So the pair of Dura Ace hubs comes in at 450g. That's a huge difference. The Dura Ace front hub alone weighs more than the pair of Extralite Ultra SX hubs.

Note: Radial lacing is only allowed with certain spokes so be sure to read Extralite's Ultra Hub SX wheel building tips.