Performance Aluminum Undertray (E9x M3 M3)
Tap right for more info.
The corner pieces need to be aligned and drilled with your fender liners to secure them to the undertray. You can use self tapping screws or U clip screws.
Your OEM plastic undertray has cracked and it's now hanging by threads - and you're wondering which version is best.
In this Series, I document my experiences reviewing technical features and fitting various undertrays to my M3 V8.
Cheers,
- Matt