★ Crank Arm length: 165/167.5/170/172.5/175/177.5mm, 7075AL. 

 

★ Chainring: 53/39T or 52/39T; 7075AL, 5 bolt 130mm BCD.

 

★ Chainring: 50/34T (compact); 7075AL, 5 bolt 110mm BCD.

 

★ Chainring bolt: KCNC Allen bolts 7075AL.

 

★ BB: 68mm(BSA). 70mm(ITA)

 

★ Chainline: 45.8mm

 

★ Q-Factor: 153mm

 

★ Bearing: Full stainless steel, better anti-rusting&durability.

 

★ High precision full CNC machined chainrings for smooth shifting.