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