ENGINEERING BMW RACING PERFORMANCE
TOWER STRUT BAR
This bar was intentionally made
to have a snug fit; this is customary for race car chassis
In cars with high mileage or cars that have been in an
accident the shock towers may be closer together than normal. This
can cause high spots which can cause fitting interference.
The bar can only fit one way,
meaning, that the left hand shock tower has a different shape than
the right shock tower.
On E30 chassis the left hand tower, which is
the driver side, appears to have less curvature than the right and
also has two (2) bent corners at the top of the side skirt, also the
right hand appears to have more curvature and appears to be more
On E36 chassis the right hand
tower has less curvature and the left hand tower has more noticeable
In cars with carpeting we
recommend a vertical cut made with a razor blade, approximately 3”
top to bottom, where the stress bar horizontal tube will come
through or the carpet can be removed and reinstalled after
installation of bar.
printing this page for ease of reference during your install
Jack up the
rear of the car from the cradle or suspension cross beam with the
rear wheel clear off the ground. This is to allow the shock tower to
separate slightly which will make for an easier installation.
the undercoat from the area where the bar will be attached. The bar
assembly is made to fit so precisely that it does not allow for
Drop the bar in to the correct position, using
the four (4)
8mm nuts and bolts the same as the shock studs, use these to
temporarily bolt the bar down through the stud holes, these will be
Now you are ready to drill holes through the
fender house, ¼” diameter in size
Use the included hardware to
fasten the bar skirts to the shock tower housing.
If for any reason the shock
tower bar assembly is not fitting correctly it is permissible in
some cases where needed to use a plastic mallet to lower the high
spots of interference or slightly alter the contour of the shock
tower house to allow bar assembly to drop in place.