Alpina

Alpina-OS 53/39CC

.Length - 170mm, 172.5mm, 175mm
.BCD - 110mm
.Chainring - 53/39T
.Chainline - 43.5mm
.Outer/Center Chainring - 7075 CNC Sand Black Anodized 
.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 - 110mm
.Chainring - 53/39T
.Chainline - 43.5mm
.Outer/Center Chainring - 7075 CNC Sand Black Anodized 
.Crank Finish - Forged Alloy 7050, Silver, Black Anodized 
.BB Cups - BB -1.37x24/68mm
.BB Axle - Cromoly SCM 435

Alpina 50/34AA

.Length - 170mm, 172.5mm, 175mm
.BCD - 110mm
.Chainring - 50/34AA
.Chainline - 43.5mm
.Outer/Center Chainring - Press Steel Black, Silver Anodized 
.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
.Outer Chainring - Press Steel Black, Silver Anodized 
.Crank Finish - Forged Alloy 7050, High-polish Ti, Silver, Black Anodized
.BB - Square (113mm)