Just bragging about a new part. They are hard to come by here in the US as the place stopped producing them about 7 years ago.
It is full carbon, but the ring is painted black. It’s held shut with a built-in magnet.
Weighs only 52g, thus saving 208g over the US gas door.
Every gram counts!
Yeah, this mod makes sense to normal people because it looks great and saves what I consider a lot of weight on a light car.
I’m actually mentally ill when it comes to this stuff. My kids don’t know why I’ll spend an entire day in the garage messing with a couple of parts to save 60 grams:
I have over 400 fasteners I’ve replaced with aluminum as well as some replaced with Ti.
Love that fuel filler cap👍
Have you tried drilling holes in your screen wash bottle or engine coolant tank, that will save some weight? 
