Product quality is great. Fit quality could be better. Left splitter fit almost perfect but the right splitter doesn't fit the best, which creates a gap on the left side.
Very strong durable material that matches the black color on the M3. Easy installation, instructions would be nice, but had no problem installing it in about 20 minutes. Once installed, does not move at all and can be re-attached to an aftermarket bumper if needed. Really cleans up the front of the car! Very good buy!