The Brabus spoiler can be bought directly from
smart for approximately £130.00 in primer, it then needs to be
colour coded to your car.
When you are happy with the colour match, the
spoiler will need bonding to the boot lid itself, there are no
screws fixing the spoiler so ensure you use a quality adhesive such
as Tiger Seal.
Ensure the boot lid and bottom of the spoiler
is clean of any grease or polish by rubbing over them with thinners.
Apply a even amount of adhesive to the spoiler
itself, be careful not to add too much as when the spoiler is
pressed onto the car you don't want it squirting out from around the
edges.
Press the spoiler onto the car and tape the
corners down with gaffer tape until the adhesive cures.