D.I.D Lightweight ERV7 X-Ring Gold Chain 520 Pitch [120 Links]

D.I.D ERV7 X-Ring Gold Chain 520 Pitch [120 Links]

Features:

-The 520 ERV7 chain boasts a 3% higher tensile strength due to stronger inner side plates and thicker pins
-Due to increased X-Ring durability, the ERV7 sees a 13% wear resistance increase