Dia-Compe's high-value Gran Compe track hubs include the following features and specifications:
- Sealed bearings.
- Over locknut dimensions: Front - 100mm.; Rear - 120mm.
- Flange diameter at spoke hole centers: Ø 62mm.
- 9x1mm front axle threads; 10x1mm rear axle threads
- Duplex type rear hub is threaded to accept a track cog and lockring on each side, ("fixed/fixed", lockrings not included).
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