BMX ボトムブラケットの規格
| Style | Type | MFG# | OD | Width | ID |
|---|---|---|---|---|---|
| R12 | Pressed Cups | R12 | 41.2mm | 11.1mm | 19mm |
| Euro | Threaded Cups | B536 2231 | 32mm 31mm | 7mm 7mm | 19mm 22mm |
| Mid | 41mm OD Pressed Bearings | R12 R12/22 | 41.2mm 41.2mm | 11.1mm 11.1mm | 19mm 22mm |
| Spanish | 37mm OD Pressed Bearings | MR1937 MR2237 | 37mm 37mm | 9mm 9mm | 19mm 22mm |