Rough Country PERF653 User Manual

92PERF165200

97-06 JEEP TJ 2 1/2”PROGRESSIVE COIL SUSPENSION KIT

Thank you for choosing Rough Country for your suspension needs.

Rough Country recommends a certified technician installs this system. In addition to these instructions, professional
knowledge of disassemble/reassembly procedures as well as post installation checks must be known. Attempts to
install this system without this knowledge and expertise may jeopardize the integrity and/or operating safety of the
vehicle.
list. Be sure you have all the needed parts and understand where they go. Also please review the tools needed list
and make sure you have needed tools.

As a general rule, the taller a vehicle is the easier it will roll. We strongly recommend, because of rollover possibility,
that the vehicle be equipped with a functional roll-bar and cage system. Seat belts and shoulder
harnesses should be worn at all times. Avoid situations where a side rollover may occur.

Braking performance and capabilities are decreased when significantly larger/heaver tires and wheels are used. Take
this into consideration while driving. Also, speedometer recalibration is necessary when larger tires are installed.

Do not add, alter, or fabricate any factory or after-market parts which increase vehicle height over the intended height
of the Rough Country product purchased. Mixing component brands, lifts, and/or combining body lift with suspension
lifts voids all warranties. Rough Country makes no claims regarding lifting devices and excludes any and all implied
claims. We will not be responsible for any product that is altered.

This 2 1/2” suspension system was developed for 31x10.50x15 tire on a stock wheel. An after market 8” wide wheel
with 3.75” of back spacing may also be used for larger tires (32” x 11.50”). The use of stock wheels with larger than
stock tires may cause the tire to come in contact with the lower control arm at full turn. The use of aftermarket wheels
is recommended to avoid this. Due to the inconsistency of vehicles when manufactured and the various options avail­able, the amount of actual lift gained by this lift kit may vary slightly. On models outfitted with extra bolt-on equipment
and accessories, Rough Country offers new coil spring isolator pads made from polyurethane to boost ride height
3/4" and these may be needed to maintain a level performance look. Longer shocks are needed on this kit. For

optimum performance RCX 2.2 Series shocks are highly recommended for full suspension articulation and
optimum ride quality.

Any vehicle equipped with any Rough country product must have the “Warning to Driver” decal installed on the sun
visor or dash. The decal is to act as a constant reminder for whoever is operating the vehicle of its unique handling
characteristics. INSTALLING DEALER—It is your responsibility to install the warning decal and to forward these in-

Please read all the in structions before beginning the installation. Check the kit hardware against the parts

PRODUCT USE INFORMATION

NOTICE TO DEALER AND VECHICLE OWNER

Kit Contents

4 Cylinder:
9239-Fr Coils
9237-RR Coils
Front Shocks
Rear Shocks

6 Cylinder:
9238-Fr Coils
9237-Rr Coils
Front Shocks

Tools Needed
Spring Compressor
Silicone spray
Torx key socket
Floor jacks
Wheel chocks
Torque wrench
1/2 drive ratchet and sockets
Heavy duty jack stands
Safety glasses

Torque Specs
Size Grade 5 Grade 8
5/16” 15 ft/lbs 20 ft/lbs
3/8” 30 ft/lbs 35 ft/lbs
7/16” 45 ft/lbs 60 ft/lbs
1/2” 65 ft/lbs 90 ft/lbs
9/16” 95 ft/lbs 130 ft/lbs
5/8” 135 ft/lbs 175 ft/lbs
3/4” 185 ft/lbs 280 ft/lbs

Rear Shocks

FRONT INSTALLATION INSTRUCTIONS

1. The front-end components are installed first.

2. Place the vehicle on a level surface. Set the parking brake. Center the front wheels and chock rear wheels.

3. From inside the engine compartment, remove the upper stud nut, retainer and grommet from both of the front
shocks.

4. Place jack stands on the frame rail behind the lower control arm mount on the frame and jack up the vehicle. In­stallation is done one side at a time.

5. Remove the front tires and wheels.

6. Remove the sway bar links from the axle using a 18mm wrench / T55 torx head bit to allow the axle to be lowered
for coil spring removal. See Photo 1.

7. Place a floor jack underneath the axle for support and complete the removal of the front shock absorbers. Retain
factory lower mounting hardware for re-use.

8. Remove the coil spring clip located on the bottom coil seat as shown in Photo 2 using a 13mm wrench on the
driver side of the vehicle. Lower the axle and remove the coil spring.

PHOTO 1 PHOTO 2

9. Install the new front progressive rate coil spring. A coil spring or strut compressor may be needed for the new coil
spring installation. Install the new coil spring (with the coil wraps that are closer together to the top) into the up­per and lower spring pockets and carefully remove the compressor. Make sure the coil is seated properly in the
coil seat by rotating the spring so the pig tail end fits in the spring pocket. Install the coil spring clamp and torque
the spring clip bolt to 16ft.-lbs.

10. Install the front shock absorber in the factory upper &lower mounts. (Longer shocks are highly recommended
for this lift).

11. Repeat installation on the opposite side of the vehicle.

12. Install the tires, wheels and lug nuts and tighten to factory specifications. Lower the vehicle to the ground

13. Reinstall the sway bar links in the factory location with factory hardware using a 18mm wrench and T55 torx head
bit.