Extralite Ultrahub SX
November 9, 2007 by Michael Maage
Filed under Light Parts
New Fronthub for Roadbikes from Extralite: Extralite UltraHub SX
Weight: 49gr.
Material: special 7075TX.
Bearings: 2RS sealed cartdrige.
Micro-Tuner: quickest bearing preload system.
Finishing: “hart coat” sides, black anodized body.
Graphics: laser etched.
Option: Hybrid ceramic bearings.
Dimensions for wheel building: Avaiable drillings 16 - 18 - 20 - 24
Center to flange: int. 37mm
Spoke drilling diameter: 28mm
Spoke hole diameter: 2,5mm
Radial lacing is allowed on interal flange side and only with D/B spokes (central section equivalent to Ø 1.5mm).
Micro-tuner allows an easy and quick bearing preload adjustment, no-tools required!
Flanges recive our new special treatments (military standard) to handle radial lacing stress.
To minimize torsional static forces flanges self-align under spoke lacing tension.
As every Extralite products UltraHubs exceede UNI/DIN Safety standards. Safety tests simulate a very strong 90kg (200lb) rider output.
Price: 149€