D.I.D Racing Chains 630X98 VS
D.I.D NZ Super Non O-Ring Series Chain. The NZ Series features an exclusive SDH Pin Treatment for Superior Strength and Long Life.
The SDH Pin treatment creates a hard chromium-carbide layer or the pin surface which increases chain life. And at the same time the pins inner core remains soft to absorb the tremendous shock loads without breaking.
In addition, all NZ Series chains have Solid bushings and Quad riveted pins.