★ Crank arm length: 165/170/175mm, 7075AL. ★ Chainring: 32/22T; 7075AL.

 

★ Spider: 4-arm BCD 104/64Tmm, 7075AL.

 

★ BB: 68/73-145mm spindle.

 

★ Q-Factor: 191mm.

 

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

 

★ High precision full CNC machined chainrings for smooth shifting.