Square axle.
This bottom bracket has a built in width of 73 mm. The bottom brackets thread is the BSA thread, type 1,37x24.
The bottom bracket shaft is square and has a lenght of 113 mm.
| Manufacturer | Shimano |
| Width of the bottom bracket | 73 mm |
| Length of axle | 113 mm |
| Type of thread | BSA |
| Barcode / EAN | 4524667089506 |
