350 S. St. Charles St. Jasper, In. 47546
Ph. 812.482.2932 Fax 812.634.6632
www.ridetech.com
Part # 11027199
55-57 Chevy Rear AirBar
(One Piece Frame)
Components:
1 90000160 Driver side lower axle bracket
1 90000558 Passenger side lower axle bracket
1 90000556 Front cross member (33.688”)
1 90000554 Upper shock mount
1 90000555 Upper shock mount
4 90000552 Heim end spacer for diagonal bar
1 90000550 Lower shockwave mount - Driver
1 90000551 Lower shockwave mount - Passenger
8 90001942 Pressed into bars
4 90000956 Parallel Bars C-C 18.50”
1 90000941 Diagonal bar C-C 30.25”
2 90001617 5/8” Shock studs
1 90000266 Brake line tab
4 90001584 Rod end
2 90001589 Heim end for Diagonal link
6 99752004 ¾”-16 Hex jam nut for rod ends
4 90002067 Aluminum spacer – lower shock bearing
Hardware Kit Part # 99010019:
4 1/2”-20 x 3/4” Gr.5 bolt Lower Shockwave Mount
10 5/8”-11 Nylok jam nut Rod ends
8 5/8”-11 x 2 ¾” Gr.5 bolt Bar ends
2 5/8”-11 x 3” Gr.5 bolt Bar ends with diagonal link mounts
2 1/2"-13 x 2 ¼” Gr.5 bolt Upper Shockwave mount
2 1/2"-13 Nylok jam nut Upper Shockwave mount
20 3/8”-16 x 1” type F thread forming bolt Cross member and upper Shockwave mount
20 3/8” Lock washer Cross member and upper Shockwave mount
2 #10 x 3/4" Tek screws Brake line bracket
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1. Raise the vehicle to a safe and comfortable working height. Use jack stands to support the vehicle
with the suspension hanging freely.
2. Support the axle and remove the leaf springs, shocks, bump stops, pinion snubber and tail pipes.
Refer to the factory service manual for proper disassemble procedures.
3. The parking brake brackets will be in
the way of the 4 link and must be
removed. Loosen the parking brake
adjustment nut and remove the cable
from the frame bracket. The tack weld
can be broke loose with a hammer and
chisel. Grind the remains of the weld
smooth.
4. The rear brake line bracket on the
passenger side fame rail must also be
removed.
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5. Use a couple clamps to secure the
crossmember between the frame rails.
Slide it forward to the edge of the body
mounts. Drill the holes with a 5/16” bit
and thread the 3/8” x 1” self-tapping bolts
in one at a time.
Do not over tighten the self-tapping
bolts; they can be stripped.
6. The location of the upper Shockwave
mount is determined by measuring
20 1/4” from the edge of the bracket to
the large hole in the bottom of the frame.
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7. Use a clamp to hold the bracket
against the inside of the frame and drill
the holes with a 5/16” bit. Thread a 3/8”
x 1” self-tapping bolt into the frame after
drilling each hole.
8. Note there is a driver and passenger
side bracket and are stamped
accordingly. When using the correct
bracket the Shockwave will
perpendicular with the ground.
9. How do you set the pinion
angle? On a single-piece
shaft you want to set it up
where a line drawn through the
center of the engine crankshaft
or output shaft of the
transmission and a line drawn
through the center of the
pinion are parallel to each
other but not the same line.
A simple way to do this is to
place a digital angle finder or
dial level on the front face of
the lower engine pulley or
harmonic balancer. This will
give you a reading that is 90
degrees to the crank or output
shaft unless you have real
problems with your balancer.
At the other end, you can
place the same level or angle
finder against the front face of
the pinion yoke that is also at
90 degrees to the centerline.
If you rotate the yoke up or
down so both angles match,
you have perfect alignment.
Road testing will tell you if
you have it right. If you
accelerate and you get or
increase a vibration, then the
pinion yoke is too HIGH.
Rotate it downward in small
increments of a degree or two
until the problem goes away.
If you get or increase a
vibration when decelerating,
then the pinion yoke is too
LOW. Rotate it upward to
correct it.
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10. Pinion angle must be set at ride
height. At ride height there should be 4
1/2” between the axle and frame.
11. One trick to help maintain these
setting while welding in the axle bracket
is to tack weld a 4 1/2” long spacer
between the axle and frame.
12. After setting the pinion angle, make
sure the axle is centered. This can done
by measuring from the axle flange in to
the frame rail.
13. Install the 4 link bars into the
crossmember and axle bracket, but do
not tighten the bolts yet. Use the 5/8”
x 2 3/4" bolts and nylocs supplied.
Check the length of the bars; they should
be 18 1/2" C-C.
14. There is a driver and passenger side
bracket. The passenger side bracket
has the diagonal link bracket welded to
it. These rod ends will use a 3” bolt.
You can use a large hose clamp to hold
these in place temporarily.
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15. Swing the axle bracket up to the
axle. These brackets must be centered
and aligned with the crossmember
mounts before welding. The brackets
should be 31 5/8” apart on the outside
measurement. Then just center it
between the axle flanges.
16. Tack weld the bracket to the axle.
Double-check axle center, bracket
alignment, and pinion angle. Remove the
bars to avoid frying the bushings. Then
finish welding the bracket 1” at a time in
different spots to avoid warping the axle.
17. Bolt the lower Shockwave mount
to the axle bracket using the 5/8” x 3/4”
Allen bolt. Apply anti-seize to the
threads. It is easier to remove the bars
to install these bolts.
18. There is a driver and passenger
side bracket, the correct bracket will
offset the Shockwave toward the
wheel.
19. Bolt the diagonal link into place
with a spacer on both sides of it using
a 5/8” x 2 3/4” bolt and nyloc. It should
measure 30 1/4" C-C.
20. Install the parking brake cable into
the new tab on the cross member.
21. With the axle at ride height snug
all the 4 link bolts. These bushings are
rubber and do not require lubrication.
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22. Apply thread sealant onto the air
fitting and screw it into the top of the
shockwave. Air fitting location can be
moved by rotating the bellow assembly
seprate from the shock.
23. Screw the stud into the lower billet
mount. Place the washer over the stud
then the Shockwave followed by
another washer. Apply anti-seize to
the threads and then nyloc nut.
24. The Shockwave/CoilOver is held
to the upper mount using a 1/2" x 2
1/4" bolt and nyloc.
25. Remove the spacer from
between the axle and frame.
26. A new brake line tab is supplied
and will mount just below the original.
Make sure it clears the bar through full
suspension travel.
27. Driving height will be with approximately 13" from center eye to center
eye.
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