Go to the hardware store and get some of those X-Mas tree fasteners...1/4 inch should work fine...use like 10 or so...Some people use nuts and bolts but I would be scared it would do more damage if you hit something while driving...I've hit a few pieces of tire on the freeway and it's fine, I used the fasteners that came with it.

 

I used the supplied fasteners as well...no problems so far...

 

I just used screws for mine.

 

You can use any plastic type fastener. The reason you want to stay with plastic is if your chin spoiler hits something the plastic will give and your bumper will not be trashed.

 

You can get them from a hardware store.

 

Yes definitly dont use bolts.. I ran over a curb last month and it ripped the whole whole chin spoiler off but did not do any damage to my bumper. If it was bolted down it probably would have done alot more damage. It will not come off long as you dont hit anything.

 

You need this which you can buy at any autopart store

 

I just bought some SS screws and drilled those ****ers into my bumper...however i'm about to take my chin spoiler off as it has sustained a enormous amount of punishment, as my car is lowered about 2.5" inches...everytime i go through a speed bump it hits, when i go up my driveway it rubs...its gotten to the point where iits so messed up it looks like total ***..its coming off this weekend and probably never have one again... ..i really like it too...