2003 - 2007 Infiniti G35 Black Painted ABS Plastic Rear Window Roof Spoiler
Although fiberglass is lighter, fiberglass has issues with cracking and fitment. ABS plastic has a lower chance of cracking and because of the flexibility, are much easier to install then the fiberglass counterpart. ABS Plastic wings are usually to enhance to vehicles looks instead of producing a lighter material for racing purposes.