VMS RACING 7 PC Piece Universal Black Vortex Generators Roof Shark Fins Spoiler Wing Kit (Set of Seven) Compatible with Car Truck SUV

The vertex generator has the correct design. Good quality

Have not noticed any improvements with mileage, so I wouldn't install them if I did it over.

Great product, looks good on my car, excellent and friendly customer service, quick shipping. I have absolutely zero complaints, and will do business with again! Seller genuinely cares about his customers!

Had my reservations, especially when I purchased 3 packages and two of them each had one piece with sticky backs that were not complete, eventually the seller sent me two replacement sticky backs. Now, I used these on my 2000 Silverado 2500 with a flatbed and lift gate. I sell and move large safes and vaults. I saw no change in my fuel usage when driving unloaded at 12mpg. However when driving with a safe loaded on the back of the truck, AGAIN I saw no change in my fuel usage at 12 mpg. WOW! it works. usually when I drive with a safe in the back of truck my fuel usage goes up and mpg drops to about 10mpg. 2-6-2020 update, these are still holding on !

Item came in just a few days and went on as described, pretty easy. I don't know as of yet if it's helping my gas mileage, but the back window on my truck cap is staying clean now. They look good and easy to install with the two sided tape.

Works great! the adhesive is extremely strong i tried to pull one off to no avail. Update over a year later. They are not coming off at all!! If yours come off. Your doing something extremely long. Hundreds of car washes and wind speeds of over 140 and not a single damage.

I have noticed the Wind Noise, when my driver's window is substantially less! And they look cool too!

So a while back i had installed a carbon fiber spoiler on my car and my gosh did my MPG go down, i was looking for a fix that would actually work and would look to bad either. started looking into vortex kits and what not and found these, they looked like they would actually work compared to the others. so i bought them and had them put on by a pro, why? because my roof is a bit round not straight soo plenty of measuring involved. And Finally now that they are on, i've noticed my MPG went up again pretty significantly and i can still feel the spoiler working as well.- Worth The buy if you want actual functionality with design- a Definite MPG increase due to less drag- Easily Throw on a coat of paint if you don't like the color- The Survived this winter with all the snow with no chipping, peeling or anythingi gave it 4 stars, because im quite picky and nothing is ever perfect, but this product would defiantly get the job done.