Extralite's straight pull front road hub design, the SPX, is among their lightest at 49.2 grams. The flanges have been bulked up slightly from the previous SPM hub, and decorative machining has been added for additional aesthetics. The drillings have been moved out on each side, resulting in increased lateral stiffness of the complete wheel.
The UltraFront SPX hub flanges are specially heat treated to handle the stresses of radial spoke lacing, while the axle ends are specially hard-anodized for long wear life.
100% made in Italy.
As with all Extralite products, UltraHubs exceed the European UNI/DIN Safety standards. Extralite's safety tests simulate a very strong 90kg (200lb) rider output.
We recommend that Extralite hubs, especially the SPX be built by an experienced wheelbuilder. We are happy to provide this service, and can provide helpful suggestions in rim and spoke selections. Please contact us directly or submit a form for a custom wheelbuild here.