350 S. St. Charles St. Jasper, In. 47546
Ph. 812.482.2932 Fax 812.634.6632
www.ridetech.com
Part # 11324099
78-88 GM “G” Body Rear CoolRide Kit
Components:
2 90009000 Tapered sleeve air spring
2 90000319 Upper cup bracket (offset tube & ears)
2 90000290 Lower rear air spring plate 5.5”
2 90000291 Lower rear air spring washer 2.5”
2 90000224 Upper washer 4” (may not be needed)
Hardware:
4 99371001 3/8” x 3/4" USS bolt Air spring to upper cup bracket
6 99373005 3/8” lock washer Air spring mounting
2 99435003 7/16” x 2” stud Upper cup bracket to frame
2 99432001 7/16” USS Nylok nut Upper cup bracket to frame
2 99433002 7/16” SAE flat washer Upper cup bracket to frame
6 99373003 3/8” SAE washer Air spring mounting
2 99371004 3/8” x 1 ¼” USS bolt Air spring to axle
Installation Instructions
1. Raise and support vehicle at a safe and comfortable working height.
2. Support the axle then remove the coil spring and shock. Refer to service manual for proper
disassembly procedure. To help keep the axle in place, do one side at a time.
*** Must Use RideTech Rear Shock Kit ***
3. Apply thread sealant to a 90 deg.
air fitting and screw it into the top of
the air spring.
4. Place the upper air spring bracket
on top of the air spring and secure
with two 3/8” x 3/4" bolts, flat
washers, and lock washers.
5. Thread the 2” stud into the nut in
the bottom of the bracket.
6. Hold the air spring assembly up to
the coil spring pocket with the stud
protruding through the hole in the
center of the coil spring pocket.
Place the 4” diameter washer over
the stud and tighten with a 7/16”
Nyloc nut and flat washer.
Note: Some cars have a small hole
in the frame and will not need the 4”
washer.
11. Driving height on this air spring is
Upper
Washer
Airline
Frame
7. Place the air spring plate over the
lower coil spring mount on the axle.
Extend the air spring so the bottom of
it seats on top of the plate. Some
cars will require trimming of the coil
spring retainer to allow this.
8. Use the 3/8” x 1 ¼” bolt and 2.5”
washer to secure the air spring to the
axle.
9. Install the new shocks using the
hardware supplied.
10. Check air spring clearance with
exhaust and anything else that could
rub against it. Abrasion will cause
air spring failure and is not a
warrantable situation.
Airspring
Plate
Axle Tube
Airspring
Lower
Washer
8 ½”-9” tall. Maximum extended
height is 12”, minimum compressed
height is 4 ½”. Allowing this air
spring to exceed these dimensions
will cause failure. The shock
absorber and factory bump stop
should keep the air spring within
these limits.
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