D.I.D. (DKK-004 520VX2 Chain and 15/43T Sprocket Kit
- D.I.D's Patented X-Ring design has the best sealing properties of any O-ring chain, D.I.D X-Rings keep the dirt out and lubrication in for the longest wear life.
- The X-Rings twist between the side plates instead of being squished to reduce friction and minimize power loss.
- High carbon steel rear sprockets are heat treated for maximum durability and long life, countershaft sprockets are made from chrome-moly steel for superior strength and durability.