Rough Country PERF905 User Manual
92190500
Thank you for choosing Rough Country for all your suspension needs.
Jeep Grand Cherokee 93-98 ZJ 4” Longarm
Rough Country recommends a certified technician install 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.
Please read instructions before beginning installation. Check the kit hardware against the parts list on this page. Be sure
you have all needed parts and know where they go. Also please review tools needed list and make sure you have
needed tools. Always wear safety glasses.
PRODUCT USE INFORMATION
Certain Rough Country Suspension products especia lly long arm kits are intended to improve off-road performance. The
addition of this kit may result in the vehicle handling differently than a factory equipped vehicle. As a rule seat belts and
shoulder harnesses should be worn at all times. Avoid situations where a side rollover may occur.
Generally, braking performance and capability are decreased when larger/heavier tires and wheels are used. Take this
into consideration while driving.
Do not add, alter, or fabricate any factory or after-market parts to increase vehicle height over the intended height of the
Rough Country product purchased. Mixing component brands is not recommended.
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 kit features Rough Country’s adjustable joint design. Adjustable end tool is included in kit.
Assemble the joints per the separate instruction sheet Part # 92RCJ120 provided.
Due to inconsistency of vehicles when manufactures and various options available, the amount of actual lift gained by
this lift kit could vary. Muffler modification or off-road mufflers are required on this kit.
This suspension system was developed using a 31 x 10.50 x 15 tire with factory wheels. After market wheel will fit with
3 5/8” back spacing. Larger tire and wheel combinations may increase leverage on suspension, steering and related
components. Consider the additional stress you could be adding on the OE components, when selecting combinations
larger than OE.
NOTICE TO DEALER AND VEHICLE OWNER
Any vehicle equipped with any Rough Country product should have a “Warning to Driver” decal installed on the inside of
the windshield or on the vehicle’s dash. The decal should act as a constant reminder for whoever is operating the vehicle of its unique handling characteristics.
TORQUE SPECS:
Size Grade 5 Grade 8
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
Class 8.8 Class 10.9
8MM 18ft/lbs 23 ft/lbs
10MM 32ft/lbs 45ft/lbs
12MM 55ft/lbs 75ft/lbs
14MM 85ft/lbs 120ft/lbs
TOOLS NEEDED:
8mm wrench / socket
10mm wrench / socket
11mm wrench / socket
12mm wrench / socket
13mm wrench / socket
15mm wrench / socket
16mm wrench / socket
18mm wrench / socket
19mm wrench / socket
21mm wrench / socket
22mm wrench / socket
Floor Jack
Jack stands
Hammer
Reciprocating Saw
9/16” wrench / socket
5/8” wrench / socket
3/4” wrench / socket
Crescent wrench
T55 Torx Head
T50 Torx head
Safety Glasses
Drill
11/32 drill bit
1/4” drill bit
15/32” drill bit
3/4” or step drill
WD40
Coil Spring Compressor
KIT CONTENTS
V
O
N
B
B
R
Q
Q
D
P P
C
M
C C
E
F G
C
V
O
N
J K
A
H
U
L
9288—Front Coil Spring (A)
9289—Rear Coil Spring (B)
1905BOX1 -
(12) Flag nuts (C)
93-95 Transmission Mount (D)
Skid Plate (E)
Rear Dr. Control Arm Bracket (F)
Rear Pass. Control Arm Bracket (G)
Sway Bar Disconnects (H)
Sway Bar Mounting Brackets (I)
1905BOX2 -
Front Dr. Lower Control Arm (J)
Front Pass. Lower Control Arm (K)
(2) Front Upper Control Arm (L)
1905BOX3 -
Crossmember (M)
I I
H
T
L
U
S
1905BOX4 -
(2) Rear Lower Control Arm (N)
(2) Rear Upper Control Arm (O)
(2) Rear Bumpstop (P)
(2) Rear E-brake Bracket (Q)
Rear Track Bar Bracket (R)
1079G –Front Track Rod Kit
Front Adjustable Track Bar (S)
Front Track Bar Bracket (T)
PERF2.24ZJLA -
(2) 660585 Front Shock (U)
(2) 660584 Rear Shock (V)
A
1905BAG1
In 1905BOX3
:
4-10mm x 35mm Bolts
4-10mm Flat Washers
8-7/16” x 1 1/4” Bolt
10-7/16’ Flat Washers
2-3/8” x 3 1/2” Self Tapping Bolt
1905BAG2
in 1905BOX1
2-9/16” x 4” Bolts
4-9/16” Flat Washers
2-9/16” Lock Nuts
2-10mm x 80mm Bolts
2-10mm Lock Nuts
4-10mm Flat Washers
1905BAG3
in 1905BOX1
4-1/2” ID x 3 3/8” Long Crush Sleeves
4-1/2” x 5” Bolts
8-1/2” Flat Washers
4-1/2’ Lock Nut
4-7/16” x 1 1/2’ Bolts
4-7/16” Flat Washers
1905BAG4
in 1905BOX4
4-9/16” x 4” Bolts
8-9/16” Flat Washers
4-9/16” Lock Nuts
94000968BAG / 94000968BAG2 / ES505BAG
in 1905BOX1
2-1/2” Lock Nut
2-1/2” Flat Washer
2-1/2” Lock Nut
2-Double Wire Hitch Pin
2-3/8” x 1 1/4” Bolt
2-3/8” Lock Washer
4-5/16” x 1” Self Tapping Bolts
2-Upper Sway Bar Mounts
2-Lower Pins
2-3/8” Flat Washers
HARDWARE BAGS
Continued...
1905BAG6
In 1905BOX1
4-3/8” x 1’ Bolts
4-3/8” Flange Lock Nuts
1905BAG7
In 1905BOX4
2-3/8” x 1 3/4” x 2 5/8” U-bolt
4-3/8” Flange Lock Nut
1-5/16” x 1 1/2’ Bolt
9-5/16” Flat Washers
1-Brake Line Clip
2-Cable Ties
4-5/16”x 1” Bolts
4-5/16” Lock Nuts
1-7/16” x 1’ Bolt
1-7/16’” Lock Nut
2-7/16’ Flat Washer
1-12mm x 65mm Bolt
1-12mm Flat Washer
1-12mm Flange Lock Nut
1-Crush Sleeve
4-3/8” x 1” Bolts
1905BAG8
In PERF2.24ZJLA Shock Box
2-Rear Lower Sleeves
2-Front Upper Stud Bushing Bags
RCJ110Bag Large Joint Bags
& RCJ111Bag– Small Joint bags-Qty 4 each Bags
In 1905Box2 & 1905Box4
1-Threaded Ring
1-10/32”Set Screw
1-Flex Joint Flat Washer
1-Flex Joint Ball
2-Flex Joint Bushings
1-Snap Ring
1-1 1/4” Jam Nut
1-Grease Fitting
1079- Front Track Bar Bracket Box
In 1079
1-Track Bar Sleeve
2-Track Bar Bushings
1-3/4” Jam Nut
2-7/16” x 2 3/4” Bolts
4-7/16’’ Flat Washers
2-7/16” Lock Nuts
2-Heim End Spacers
FRONT INSTALLATION
1. Place the vehicle on a level surface. Set the parking brake. Center the front wheels and chock the rear wheels.
2. From inside the engine compartment, using a 13mm deep well socket, remove the upper stu d nut, washer and bushings from the front shocks. See PHOTO 1.
3. Jack up the vehicle and place jack stands on the frame rail behind the lower control arm mount.
4. Remove the front tires/wheels, using a 13/16 deep well socket.
5. Place a floor jack underneath the axle for support and remove the lower shock bolts from the front shoc ks using a
13mm socket and wrench. Retain the factory lower bolts for reuse. See PHOTO 2.
PHOTO 1 PHOTO 2
REMOVE SHOCK FROM THE UPPER MOUNT REMOVE SHOCK FROM AXLE
6. Using a 15mm wrench and 18mm wrench for the upper bolt and a T55 torx head for the lower bolt, remove the sway
bar links. See PHOTO 3.
7. Remove the lower track bar bolt on the axle side and the upper track bar bolt on the frame side , using a 15mm
socket. See PHOTO 4.
PHOTO 3
REMOVE THE SWAY BAR FROM THE AXLE
REMOVE TRACK BAR BOLT
PHOTO 4
8. Using a 13mm wrench remove the driver and passenger side coil retainer. Lower the axle and remove the coil
spring. A coil spring or strut compressor may be needed to remove the stock coil. Pull the ABS sensor wire from the
stock mount. Spray the line with WD40 to allow the mount on the wire to slide. See PHOTO 5.
9. Mark the original position of the eccentric cams on lower control arm. Using a 21mm socket & 18mm wrench remove
the stock lower bolt from the axle. Using a 21mm socket and wrench, remove the frame bolt from the lower control
arm. Retain the factory hardware fro reuse. See PHOTO 6.
10. Using a 15mm socket and T50 torx head, loosen and remove the upper control arms.
PHOTO 5
PHOTO 6
REMOVE COIL CLIP REMOVE THE LOWER CONTROL ARM
11. Remove lower control arm pockets with a cut off wheel. Cut down the dotted line as shown and along the back side
of the control arm pocket flush with the bottom of the uni-body. Grind down all welds and burrs, then paint to prevent
rusting. See PHOTO 7.
12. Place a jack or jack stand under the transmission, remove the 4 factory bolts holding the transmission mount to the
cross-member. Using a 15mm socket. See PHOT O 8. Next remove the 2 outer bolts on each side of the factory
cross-member, so the cross-member can be removed. Using a 1 5mm socket. See PHOTO 9. If the vehicle has a 2
bolt transmission mount the steps on page 14 must be followed prior to installing the new cross-member.
13. Install the new cross-member with 4 -10mm x 35 bolts using a 16mm wrench. See PHOTO 10.
PHOTO 7
PHOTO 8
PHOTO 9
14. Using the cross-member as a template, drill 4-15/32” holes (2 each side) on each front side of the cross-member.
See PHOTO 11.
15. Using the 4 short 7/16” thread flag nuts, insert two of them on each side of the cross-member. See PHOTO 12.
PHOTO 11 PHOTO 12
PHOTO 10
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