Alpina
Alpina-OS 53/39CC
．Length - 170mm, 172.5mm, 175mm
．BCD - 110mm
．Chainring - 50/34, 53/39T
．Chainline - 43.5mm
．Crank Finish - Forged Alloy 7050, Silver, Black Anodized
．BB Cups - BB -1.37x24/68mm
．BB Axle - Cromoly SCM 435
Alpina-OS 53/39AA
．Length - 170mm, 172.5mm, 175mm
．BCD - 130mm
．Chainring - 53/39T
．Chainline - 43.5mm
．Crank Finish - Forged Alloy 7050, Silver, Black Anodized
．BB Cups - BB-1.37x24/68mm
．BB Axle - Cromoly SCM435
| *CC: | Outer Chainring - | CNC Alloy |
| Inner Chainring - | CNC Alloy | |
| *AA: | Outer Chainring - | Press Alloy |
| Inner Chainring - | Press Alloy |
Alpina 50/34AA
．Length - 170mm, 172.5mm, 175mm
．BCD - 110mm
．Chainring - 50/34AA
．Chainline - 43.5mm
．Crank Finish - Forged Alloy 7050, High-polish Ti, Silver, Black Anodized
．BB - Square (113mm)
Alpina 53/39AA
．Length - 170mm, 172.5mm, 175mm
．BCD - 130mm
．Chainring - 53/39AA
．Chainline - 43.55mm
．Crank Finish - Forged Alloy 7050, High-polish Ti, Silver, Black Anodized
．BB - Square (113mm)
| *AA: | Outer Chainring - | Press Alloy |
| Inner Chainring - | Press Alloy |