Renthal R1 520 Spring Link

What you get here is a Renthal R1 520 Spring Link, part number C143. This is a high-strength, non-O-ring chain built to handle the tough demands of offroad riding. It's a solid choice when you need a chain that's strong, lightweight, and transfers power efficiently.

The side plates are made from shot-peened alloy steel, which gives them high-tensile strength and helps them resist impact loads. The inner links are chamfered to help prevent the chain from derailing, and the extended bushings are there to cut down on friction between the plates. For longer service life, the rollers are shot-peened and the pins are chromized. The gold-anodized side plates also offer some protection against corrosion.