are they lighter? somehow give a little more power? why do i see so many on tricked out cars?

 

Yup, exactly that! Optimas have been known to give an avg of 11hp and as much as 31hp! Its crazy!











J/k!
But really, they are seen in so many cars because they are so dang powerful. Most people with an aftermarket speaker setup use them. I believe the yellow top is like 650 or 700 cold crank amps. Thats alot!

 

I got one, on my stereo and lights no longer dim at 1/2 power. (that was a problem at first)

 

Most ppl switch over to the Optima because there is more cranking power and the drain on it is much better. You can have a yellow optima on for hrs with your stereo vs a stock battery. And IMO it's a lil lighter to in weight