Originally Posted by edwinm3
3m tape and 2 screws at the bottom at the factory location, you'll have to drill the 2 holes on the diffuser yourself. I used a little bit of betalink on the top edge so it would be flushed and no gaps, I hated the way it looked with the 3m tape.
No Beta link should be required. The install with the 3M tape is all down to technique. We are working on doing a video to show how to do it best. It's not as clear cut to show in videos. I can refer anyone to their nearest Challenge dealer that I know is trained to install aftermarket lips/diffusers etc.
I have recently showed a customer that had it not installed properly how it can be done correctly and result in a part with no gaps etc. The installation technique is really that important.