Not much to these, the rears are simply stuck on with 3M tape, and the fronts have less tape as they are supplied with three little self-tapping screws. The holes are pre-drilled, I just used a bradawl to help get them started through the actual bumper.
Instructions: (I have to admit I didn't...
What are people's views on these rear diffusers as opposed to full-on replacement bumpers?
I'm liking the subtleness..
.. but can't justify the £650 odd it'll cost.
Are there cheaper alternatives out there?