Z-ring chains feature the patented Z44 sealing rings, which greatly improve performance and wear life, making previous X-ring and Z-ring chains obsolete, 50% reduction in friction compared to traditional O-rings, Constant lubrication from special high-temperature grease in the critical pin/bushing area provides long life, High-carbon alloy pins to minimize wear and increased roller thickness to prolong durability, Thicker outer plates and quad-riveting for greater tensile strength, Ideal for street bikes and superbikes up to 1,300cc, Rivet type link included, Clip type and Hollow rivet type connecting links also available; hollow type rivet connecting link works with many different chain tools, Gold color