BMW Motorrad has announced the M Endurance chain, which does not need to be lubricated like conventional motorcycle chains. The M Endurance chain uses a tetrahedrally amorphous carbon coating on the rollers that reduces friction and negates the need for lubricant. Currently, the BMW S 1000 RR and S 1000 XR are the only compatible models.

From Press Release:

For more than 90 years, the maintenance-free, environmentally friendly and comfortable shaft drive has been one of BMW Motorrad’s immovable technical cornerstones. With the M Endurance chain, BMW Motorrad now offers a maintenance-free chain with comparable characteristics for the first time.

Like previous X-ring chains, the M Endurance chain has a resident permanent lubricant filling between the rollers and pins, enclosed by X-rings. What is completely new, however, is that the previously necessary additional lubricant addition for the rollers and thus the familiar “chain lubrication” is no longer necessary, nor is any re-tensioning required from time to time due to the usual wear.
This enormous gain in comfort was made possible by using a new coating material for the rollers: tetrahedrally amorphous carbon (ta-C), also known as industrial diamond. This coating is characterized by extreme hardness and resistance and in this respect it is placed between the well-known DLC coating (Diamond Like Carbon) and pure diamond. In contrast to the metal surfaces used so far, the coating with t...