Rough Country PERF644 - Manual

97-06 JEEP TJ 3 1/4”PROGRESSIVE COIL/SPACER KIT
92PERF1641
Tools Needed:
Spring Compressor
Silicone spray
T-55 Torx Head Bit
Floor jacks
Wheel chocks
Drill Motor
5/16” Drill Bit
7/16” Drill Bit
Torque wrench
T-55 Torx Head Bit
1/2” Socket / Wrench
9/16” Socket / Wrench
3/4” Socket / Wrench
13mm Socket /Wrench
15mm Socket / Wrench
18mm Socket / Wrench
21mm Socket / Wrench
Heavy duty jack stands
Safety glasses
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.
Please read all the instructions before beginning the installation. Check the kit hardware against the parts
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.
PRODUCT USE INFORMATION
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 3 1/4” suspension system was developed for 33 x 12.5 tire on an after market 15x 8” wide wheel with 3.75” of
back spacing. 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. 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.
NOTICE TO DEALER AND VECHICLE OWNER
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-
stallation instructions on to the vehicle owner for review and to be kept in the vehicle for its service life.
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
Size Class 8.8 Class 10.9 Class 12.9
M8 18 ft/lbs 23 ft/lbs 27 ft/lbs
M10 32 ft/lbs 45 ft/lbs 50 ft/lbs
M12 55 ft/lbs 75 ft/lbs 90 ft/lbs
M14 85 ft/lbs 120 ft/lbs 145 ft/lbs