The brace is just a long metal rod with bolt holes on the ends. It's
designed is to reinforce the front subframe. There's also a
version avaliable for more serious applications.
Raise the car.
Cut the end of the plastic shield on the driver's side to gain the access
to the opening in the subframe just in front of the control arm attachment
point. The pruning scissors from the garden work well.
Locate a small oval hole in the subframe that used to be under the
shield you just cut. Insert the bolt with a big washer supplied with the
brace. The purpose of the washer is to distribute the load evently.
On the passenger side, there are two shields overlapping. You need to cut
the end of the lower shield just like you did it on the other side, and
then make a hole in the belt shield.
Attach the brace on one side without tightening the nut, then on the
other side. Tighten the nuts while holding the bolts with a short
spanner from inside the subframe.
The brace installed. I had to use a couple of washers on both attachment
points to lower the brace slightly so it clears the downpipe.