makavelli said:
but doesnt it bolt onto the bottom of the bumper and the subframe? surely the bumper wont be very secure on the lower middle section without it?
It doesnt provide the bumper with any support !!!
Go shake the middle part of the bumper, its exactly the same with or without it.
(since it is only plastic - it flexes) so doesnt really do anything.
As Fred has said, most people dont bother with them, its only there to keep road dirt out.
(which it doesnt do that well hehe)