ermm..sorry but to say no guarantee..i have not think of a way to guarantee this product..haha..no worries bro..it should have diff..the diff u will realise after u install it at the area is much more solid..that is 100%..tq
Nxes said:wat recommendation u want?give me more details?wat i think is u should try to stick on your four doors first which cost u rm 68.if u are playing sound system u can feel that the bass is much more complete n nearer to u.besides that it will make your door much more solid.when u close the door the feel is diff...tq