Rough Country 280N2 - Manual

921280N2
Thank you for choosing Rough Country for all of 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 Kit Contents list on
next page. Be sure you have all the needed parts and understand where they go. Also please review the tools needed
list to be certain that you have the tools necessary to complete the installation.
PRODUCT USE INFORMATION
We strongly recommend, because of rollover possibility, that seat belts and shoulder harnesses should be worn at all
times.
Braking performance and capabilities are decreased when significantly larger/heavier tires and wheels are used.
Take this into consideration while driving.
Do no 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, with this suspension lifts voids all warranties.
Rough Country makes no claims regarding lifting devices and excludes any and all implied claims. We will not be re-
sponsible for any product that is altered.
Due to differences in manufacturing, dimension and inflated measurements, tire and wheel combinations should be test
fit prior to installation. For this application we recommend a wheel not to exceed 9” in width with 4.5 “ of backspacing..
Additionally a quality tire of radial design is recommended, not exceeding 35” tall and 12.5” wide. If this vehicle was
equipped from the factory with 17” wheels and if purchasing new wheels, the wheel size must not be below 17” but can
be larger than 17” due to the vehicle being equipped with larger calipers /rotor.
NOTICE TO DEALER AND VEHICLE 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 character-
istics. INSTALLING DEALER—It is your responsibility to install the warning decal and to forward these installation in-
structions on too the vehicle owner for review and to be kept in the vehicle for its service life.
We hope installing your Rough Country lift kit is a positive experience. Please note that variations in construc-
tion and assembly in the vehicle manufacturing process will virtually ensure that some parts may seem difficult
to install. Additionally, the current trend in manufacturing of vehicles results in a frame that is highly flexible
and may shift slightly on disassembly prior to installation. The use of pry bars and tapered punches for align-
ment is considered normal and usually does not indicate a faulty product. However, if you are uncertain about
some aspect of the installation process, please feel free to call our tech support department at 800-222-7023. We
do not recommend that you modify the Rough Country parts in any way as this will void any warranty ex-
pressed or implied.
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
Floor Jack
Jack Stands
10mm socket /wrench
11mm socket /wrench
13mm Deep Socket
13mm wrench
15mm socket / wrench
17mm socket / wrench
18mm socket /wrench
19mm socket /wrench
21mm socket /wrench
24mm socket /wrench
35mm socket
9/16 socket /wrench
7/8” deep well socket
Torsion bar Tool
Drill
17/32 Drill Bit
Loc-Tite
Reciprocating Saw
TOOLS NEEDED:
Class 8.8 Class 10.9
6MM 5 ft/lbs 9 ft/lbs
8MM 18ft/lbs 23 ft/lbs
10MM 32ft/lbs 45ft/lbs
12MM 55ft/lbs 75ft/lbs
14MM 85ft/lbs 120ft/lbs
16MM 130ft/lbs 165ft/lbs
18MM 170ft/lbs 240ft/lbs
TORQUE SPECS:
00-06 CHEVY/GM TAHOE, YUKON,
SUBURBAN, YUKON XL & AVALANCE 6” NTD LIFT