Hi bro, all 1.3 Myvi models have front anti roll bar equipped from factory. Only 1.0 models do not have front anti roll bar. Both 1.0 and 1.3 models do not have rear anti roll bar.

I would recommend you to go for some more reputable brands like Ultra Racing as it provides warranty and is more reliable than some unknown brands. Safety and reliability comes into mind when you want to put in those bars.