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

 

★ Chainring: 56 or 60T single, 7075AL.

 

★ Spider: 5-arm BCD 130mm, 7075AL.

 

★ Chainring bolt: KCNC Allen bolts 7075AL.

 

★ Q-Factor: 153mm

 

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

 

★ High precision full CNC machined single chainring.