4
Required Modifications
MUST BE PURCHASED SEPARATELY)
Rancho Upper Control Arms RS176986B and RS176987B are designed to be used with Rancho Level It front struts RS999869UMM /
RS999870UMM, or RS66511R9*. These control arms will correct the caster and camber of a vehicle with 2-3
.5” of lift, allowing for a
range of adjustment to achieve desired handling. When using larger tires, it is recommended to adjust caster to the higher end of the
spec, or a little over the specification.
*C
ompatibility cannot be guaranteed when using other lifts
Use on an OE height vehicle may damage upper ball joints, and make it difficult or impossible to achieve proper wheel alignment.
Please consult your Ranch dealer for correct applications.
Coil and Strut Spacers
Included 1/2" Coil Spring Spacer RS176959 and
1/4”
Shock Spacer RS176950 are only for use with Rancho quickLIFT, quickLIFT LOADED,
and LEVEL-IT systems. Use of RS176950 and RS176959 is optional.
Net Lift*: RS999870UMM
≈ 2.5
0
”
RS176959
≈
0.50
”
RS176950
≈
0.25
”
*Net lift may vary due to various vehicle and accessory options
Wheels and Tires
Optional Modifications
(INCLUDED WITH RS66512R9K)
Rancho Rear Shocks
–
RS999073, Improves ride and performance.
Rancho Rear Upgrade Kit RS70511
–
Rancho Rear Upgrade Kit RS70511
can be installed to gain 1.5” lift in the rear of the vehicle
.
(included with RS66512R9K)
Please consult your Ranch dealer for correct applications. Component part number listing for 4WD only.
Tools and Supplies
(BECAUSE OF VEHICLE VARIATIONS, THIS MAY NOT BE A COMPLETE LIST)
Ford Service Manual
Torque Wrench (260 FT-LB capacity)
Ball Joint Puller
1/2” Drive Ratchet and Sockets
Assorted Combination Wrenches
Assorted Metric Allen Wrenches
Rubber Mallet
File
Hammer
Heavy Duty Jack Stands
Wheel Chocks (wooden blocks)
Hydraulic Floor Jack
Wire Brush (to clean bracket mounting surfaces)
Silicone Spray Lubricant
Tape Measure
Safety Glasses
--
Wear safety glasses at all times
Red LocTite
NOTE: Rancho components come lubed with lithium or lithium complex grease. Use of a different type (base) of grease can cause grease separ ation and breakdown
of the grease and cause the component to fail.
RS66512R9K fits up to 295/70R18 (34.3X11.6) or 285/65R20 (34.6x11.2
) on 9” wide 5.5”
backspacing wheel with trimming.
OE wheel is compatible with up to 33x12.5 tire.
Upper Control Arm RS64511 Is compatible with these tire sizes when using
Rancho Level-It Kit RS66511.
Compatibility cannot be guaranteed when using other lifts
.
Before installing any other combination, consult your local tire and wheel specialist.
