| Technical Description | ZS44/28.6|EC44/40 |
| Top Type | ZS - ZeroStack |
| Top Head Tube Inside Dia. | 44.0mm |
| Stem Clamp Dia. | 28.6mm |
| Top Stack Height | 8mm |
| Top Bearing Type | Black Oxide, Sealed |
| Bottom Type | EC - External Cup |
| Bottom Head Tube Inside Dia. | 44.0mm |
| Crown Race Seat Dia. | 39.79mm |
| Crown Race Type | Steel, Face-Sealed |
| Bottom Stack Height | 12mm |
| Bottom Bearing Type | Black Oxide, Sealed |
| Material | 6061 |
| Weight | |
| Part Number | BAA1187K |
