Regina 415 Chain Rh2 Cross Supermotard Series 120 Links

Regina has produced the first maintenance-free chain ever for a motorcycle, calling the product the BMW M Endurance chain. In reality, the product is made by Regina.

The BMW M Endurance chain is similar to other X-ring chains in that it has a permanent lubricant filling between the rollers and pins, enclosed by X-rings.

What is completely new however is  Regina’s design, in that it does not require additional external lubrication, nor does it require re-tensioning over time.

Regina achieves this by using a new coating material for the rollers: tetrahedrally amorphous carbon (ta-C), which is often referred to as an industrial diamond or a diamond-like coating (DLC) in marketing materials. 

As the name implies, this is an extremely hard compound, and in contrast to the metals used in standard chains, the coating with the ta-C does not wear off, and it also offers a drastically reduced friction coefficient.