Review on COOL·CAR 4.9ft (150cm) Universal Carbon Fiber Trunk Spoiler Lip Kit Car Rear Spoiler Exterior Rear Spoiler Kit Universal Fits for Most Cars Easy Installation (Carbon Black long150cm) by Jeff Hall

Here is the installation process that worked for me: I refused to use the adhesion promoter because I couldn't figure out what it was made of. I was sure it wasn't bad for my car but decided not to use it anyway. What I did was to mount the spoiler without it and heat some 3M tape with a hair dryer, that melted it a bit and increased the good adhesion to the paint. .That looks great. One end of the spoiler popped out but I only replaced the glue in that area and everything has been fine ever since. I would recommend this product to anyone with patience and a hair dryer!