The precision of 3D printing with the strength of Carbon Fiber, Kevlar or Fiberglass.
Carbon fiber has the highest strength to weight as well as the highest thermal conductivity. Perfect for applications requiring the greatest possible stiffness and strength. More info here - https://markforged.com/materials/carbon-fiber/
The Carbon Fiber layer materials are inside of the shifter (not visible), but stiffness will be noticeable).
Also note, the side and back of the shifters are now all black.
Install video - https://www.youtube.com/watch?v=tL4I0dvXExY