need help finding out what is this part called

[man be killin]

i own a supra and want to get some rear bumper or bumper attachment is looks like this dodge vipers and racing cars have it whats it called

http://www.google.ca/imgres?q=dodge...rt=46&ndsp=12&ved=1t:429,r:6,s:46&tx=91&ty=61

http://www.google.ca/imgres?q=dodge...0&tbnw=162&start=0&ndsp=10&ved=1t:429,r:1,s:0

http://www.google.ca/imgres?q=bmw+g...rt=24&ndsp=12&ved=1t:429,r:0,s:24&tx=79&ty=46

its basically the back lower carbon fiber thing thanks for any help

 

[homeforsummer]

It's called a diffuser. Helps direct airflow from the bottom of the car out the back to reduce lift.