The 134g UltraRear SPX is the lightest rear road hub offered by Extralite and should be considered if you are looking to build that special ultra light limited use race event wheelset. The SPX features straight pull spokes on both left and right sides which results in an increased bracing angle and an arguably more durable spoke.
Extralite's SPX hubs utilize interchangeable axle ends for Campagnolo and Shimano compatibility. This allows for the best possible spoke bracing angles for maximum lateral stiffness. A tool-free micro adjuster allows for optimum bearing preload, while the high quality steel cartridge bearings are optimized for low drag.
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.
Additional Information
- Weight: 134g
- Finish: Black anodized with laser-cut logos
- Replacement bearings: 6803-SRS/6803-2RS ABEC5 cartridges, 6903-SRS ABEC5 main axle & Ertalite®
- Dimensions
- Left Flange Diameter: 35
- Right Flange Diameter: 50
- Shimano Freehub
- Center to Left Flange: 38.5
- Center to Right Flange: 19
- Campagnolo Freehub
- Center to Left Flange: 39.25
- Center to Right Flange: 18.25
- Ideal use: Special events, road racing, climbing or time trials
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