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| Manufacturer part # | 12100017000011 |
|---|---|
| Steerer outer diameter | 28.6mm (1-1/8") / 38.1mm (1-1/2") |
| Crown race inner diameter | 39.8mm |
| Cup Insertion OD | 44mm Top/56mm Bottom |
| Stack height | 15.7mm |
| Bearing type | Sealed |
| Headset type upper | Unthreaded semi-integrated |
| Headset type lower | Semi-integrated |
| Material | Aluminum |