ReadyLift 49-27701 User manual

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49-27701-IM-AA
[phone]
MON-FRI 7AM-4PM PST
OR
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WEBSITE: ReadyLIFT.COM
**Please retain this document in your vehicle at all times.**
IF your ReadyLIFT® product has a damaged or missing
part, please contact customer service directly and
a new replacement part will be sent to you immediately.
For warranty issues, please return to the place of
installation and contact ReadyLIFT.
Limited Lifetime Warranty
This unique product warranty proves our commitment to the quality and reliability of every product that
ReadyLIFT manufactures. The ReadyLIFT product warranty only extends to the original purchaser of any
ReadyLIFT product, if it breaks, we will give you a new part. Warranty does not apply to discontinued parts.
Our Limited Lifetime Warranty excludes the following ReadyLIFT items; bushings, bump stops, ball joints, tie
rod ends, heim joints and shock absorbers. These parts are subject to wear and are not considered defective
when worn. They are warranted for 12 months from the date of purchase for defects in workmanship.
This product warranty is voided if the vehicle is not aligned after kit installation and proper maintenance is
routinely done.
Product purchased directly from ReadyLIFT has a 90 day return policy on uninstalled products from the date
of purchase (may be subject to restocking fee). Uninstalled product returns must be in the original Ready-
LIFT packaging. Please call [phone] to get an RGA# for any return. Customer is responsible for
shipping costs back to ReadyLIFT. Returns without RGA# will be refused. Contact ReadyLIFT directly
about any potentially defective parts prior to removal from vehicle.
ReadyLIFT products are NOT intended for off-road abuse. Any damage or failure as a result from off-road
abuse voids the warranty of the ReadyLIFT product. ReadyLIFT is NOT responsible for any subsequent dam-
ages to any related vehicle parts due to misuse, abuse, improper installation, or lack of maintenance. Fur-
thermore, ReadyLIFT reserves the right to change, modify or cancel this warranty without prior notice.
49-27701, 17-Up Super Duty 7” Lift w/ Radius Arms

www.ReadyLIFT.com - Phone: [phone]
249-27701-IM-AA
READ INSTRUCTIONS THOROUGHLY AND COMPLETELY BEFORE BEGINNING INSTALLATION.
INSTALLATION BY A CERTIFIED PROFESSIONAL MECHANIC IS HIGHLY RECOMMENDED.
READYLIFT® IS NOT RESPONSIBLE FOR ANY DAMAGE OR FAILURE RESULTING FROM IMPROPER INSTALLATION.
Safety Warning
MISUSE OF THIS PRODUCT COULD LEAD TO INJURY OR DEATH.
Suspension systems or components that enhance the on and off-road performance of your vehicle may cause
it to handle differently than it did from the factory. Extreme care must be used to prevent loss of control or
vehicle rollover during abrupt maneuvers.
Always operate your vehicle at reduced speeds to ensure your ability to control your vehicle under all driving
conditions. Failure to drive safely may result in serious injury or death to driver and passengers.
Driver and passengers must ALWAYS wear your seat belts, avoid quick sharp turns and other sudden maneu-
vers. ReadyLIFT Suspension does not recommend the combined use of suspension lifts, body lifts, or other
lifting devices.
You should never operate your vehicle under the influence of alcohol or drugs.
Constant maintenance is required to keep your vehicle safe. Thoroughly inspect your vehicle before and after
every off-road use.
It is the responsibility of the retailer and/or the installer to review all state and local laws, with the end user
of this product, related to bumper height laws and the lifting of their vehicle before the purchase and installa-
tion of any ReadyLIFT products.
It is the responsibility of the driver/s to check their surrounding area for obstructions, people, and animals
before moving the vehicle.
All raised vehicles have increased blind spots; damage, injury and/or death can occur if these instructions are
not followed.
.
Installation Warning
All steps and procedures described in these instructions were performed while the vehicle was properly sup-
ported on a two post vehicle lift with safety jacks.
Use caution during all disassembly and assembly steps to insure suspension components are not over extend-
ed causing damage to any vehicle components and parts included in this kit.
Included instructions are guidelines only for recommended procedures and are not meant to be definitive.
Installer is responsible to insure a safe and controllable vehicle after performing modifications.
ReadyLIFT Suspension recommends the use of an OE Service Manual for model/year of vehicle when disas-
sembly and assembly of factory and related components.
Unless otherwise specified, tighten all bolts and fasteners to standard torque specifications listed within the
OE Service Manual.
Suspension components that use rubber or urethane bushings should be tightened with the vehicle at normal
ride height. This will prevent premature wear or failure of the bushing and maintain ride comfort.
Larger tire and wheel combinations may increase leverage on suspension, steering, and related components.
Due to payload options and initial ride height variances, the amount of lift is a base figure. Final ride height
dimensions may vary in accordance to original vehicle ride height. Always measure the vehicle ride height
prior to beginning installation.

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349-27701-IM-AA
IMPORTANT NOTE:
This suspension system was developed using a 38” x 12.5” tire with 20” x 9” wheel
and a offset of +25mm. If wider tires are used, offset wheels may be necessary and
trimming may be required. Factory wheels can be used but are not recommended
with tires over 11.5” wide.
The stock spare rim can be run in an emergency - exercise extreme caution under
stock spare tire operating conditions. Please note that, if running the spare factory
tire, it is done for short distances and a speed not to exceed 45mph or damage to dif-
ferentials may occur.
A lifted vehicle may have different headlight aim performance. ReadyLIFT recom-
mends marking and recording the headlight beam position before kit installation and
then adjusting, if necessary, the headlamps to the same height settings after kit in-
stallation. Set the vehicle on a level surface 10' to 15’ from a solid wall or garage
door. (This is a general distance with some manufacturers requiring different distanc-
es.) Note the top height of the low beam's bright spot, the top of the most intense
part of the beam, for driver and passenger side. Height may vary from side to
side. Repeat this procedure and adjust after lift kit is installed. Adjust if the aim is off
by turning the adjusters gradually (a quarter of a turn) and looking to see where the
new alignment falls. It may be easier to block one headlamp while adjusting the oth-
er. Consult the owner operation manual for procedures to adjust headlights - many
automakers offer headlight aiming specs. Some states have their own specifications
when it comes to headlight aim, so it’s best to follow those rules when alighting head-
lights.
IMPORTANT NOTE:
This kit was designed using the standard frame option vehicle. Vehicles that have
been equipped with snow prep / ambulance packages will not see the same lift height
gained as they come 1” to 1.5” taller from the factory due to heavier rated front
springs. The lift height achieved is 6” to 8” over the standard frame option vehicles
depending on the kit purchased. The springs provided in this kit are not designed to
carry snow plow package and may see decreased front end heights if done.
Due to differences in factory spring length between model years, vehicles made be-
fore model year 2020, with standard duty springs, may only exhibit a 6.5” increase in
ride height.
The lift blocks in this kit are not designed to work with aftermarket or factory add on
air spring/load leveling kits that attach to the bump stop tangs. Use of this type of air
bag system will void all block warranties and can cause failure of the block bump stop
tang.

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449-27701-IM-AA
VEHICLE RIDE HEIGHT MEASURMENTS
Measure from the fender edge to the axle hub center
Factory front axle Factory rear axle
ReadyLIFT target ReadyLIFT target
After Lifted After Lifted
Driver
Before
Driver
After
Passenger
Before
Passenger
After
RECORD HEAD LAMP MEASURMENTS
Pre Installation Measurements
It is imperative that you record the following measurements and factory components.
ReadyLIFT test and records as much data from each application as possible. Vehicle
manufactures may change components or add models with different options. By re-
cording and not exceeding the fender to hub center that ReadyLIFT call out will en-
sure the lift on your vehicle is correct. This measurements and components will effect
the completion of this lift kit. Failure to do so may result in over lifting, causing prem-
ature failure of axles, CV boots and drivetrain. Over lifting a vehicle will also result in
a incorrect wheel alignment. This will wear tires incorrectly inside or outside edge. An
Incorrect alignment will cause poor vehicle handling issue such as under steer. Over
lifting will also cause a shock top off condition, creating poor ride quality and pops
and clunks prematurely wearing components. Failure to adjust head lamps may cause
dangerous driving conditions for you and other drivers on the road. Record the head
lamp position before the installation of this lift or leveling kit and adjusting to factory
position after the completion will ensure a safe and enjoyable experience.
Factory components

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549-27701-IM-AA
BILL OF MATERIALS
Before starting installation: ReadyLIFT Suspension highly recommends that the installation of this
product be performed by a professional mechanic with experience working on and installing suspension
products. Professional knowledge and skill will typically yield the best installation results. If you need an
installer in your area, please contact ReadyLIFT Suspension Customer Service to find one of our “Pro-
Grade” Dealers.
INSTALLATION BY A PROFESSIONAL IS HIGHLY RECOMMENDED.
• A Factory Service Manual for your specific Year / Make / Model is highly recommended for reference
during installation.
• All lifted vehicles may require additional driveline modifications and / or balancing.
• A vehicle alignment is REQUIRED after installation of this product.
• Speedometer / Computer recalibration is required if changing +/- 10% from factory tire diameter.
• A vehicle lift or hoist greatly reduces installation time. Installation time estimates are based on an avail-
able vehicle hoist.
• Vehicle must be in excellent operating condition. Repair or replace any and all worn or damaged com-
ponents prior to installation.
7" Lift Spring 2
Drop Pitman Arm 1
Caster Correction Bushing Kit 1
Track Bar Bracket 1
Track Bar Washer 2
Front Bump Stop Extension 2
Driver Radius Arm 1
Passenger Radius Arm 1
Front Sway Bar Drop Bracket Left Hand Side 1
Front Sway Bar Drop Bracket Right Hand Side 1
Driver Brake Line Bracket 1
Pass Brake Line Bracket 1
Steering Stabilizer Bracket (tie rod) 1
Steering Stablizer Bracket (frame) 1
Steering Stabilizer Cone Washer 1
Rear Sway Bar Bracket 2
6.5" Driver Block 1
6.5" Pass Block 1
Front Shock 2
Rear Shock 2
Steering Stabilizer 1
5/16"- 18 X .75" Hex Head Bolt GR 8 2
5/16"- 18 C-Lock Nut GR 8 2
5/16" Flat Washer GR 8 4
7/16"- 14 x 1.5" Hex Head Bolt GR 8 4
7/16"- 14 C-Lock Nut GR 8 4
7/16" Flat Washer GR 8 8
M8 - 1.25 x 70mm Hex Head Bolt GR 8.8 2
M8 Flat Washer GR 8.8 2
M12 - 1.75 x 70 mm Hex Head Bolt GR 10.9 2
M12 - 1.75 x 55 mm Hex Head Bolt GR 10.9 1
M12 - 1.75 x 50 mm Hex Head Bolt GR 10.9 4
M12 - 1.75 x 35 mm Hex Head Bolt GR 10.9 5
M12 - 1.75 C-Lock Nut GR 10.9 7
M12 Flat Washer GR 10.9 19
M18 - 2.5 x 130 mm Hex Head Bolt GR 10.9 4
M18 - 2.5 C-Lock Nut GR 10.9 4
M18 Flat Washer (Thick) GR 10.9 8
M16 - 2.0 x 445 mm x 8.22 mm U-Bolt 4
M16 - 2.0 Locking Flange Nut 8
6” Zip Tie 2
ONLY FOR 2-PIECE DRIVESHAFT:
Carrier Bearing Drop 1
7/16”-14 x 2.25” Hex Head Bolt GR 8 2
7/16” Flat Washer 2

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649-27701-IM-AA
***Parts shown in red for picture clarification only***
ReadyLIFT recommends all steps and procedures described in these instructions be performed while
the vehicle is properly supported on a two post vehicle lift with safety jacks.
Otherwise, park vehicle on a clean flat surface and block the rear wheels for safety. Engage the
parking brake.
Disconnect the vehicle power source at the ground terminal on the battery.
Lock the steering wheel in the straight forward position with the column lock or steering wheel lock-
ing device.
Raise the front of the vehicle and support with safety jack stands at each frame rail behind the low-
er control arms.
Remove the brake line bracket at the
frame. Retain factory hardware.
Remove the brake line bracket at the axle.
Retain factory hardware.
Remove the vacuum line clips from the
driver side radius arm.

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749-27701-IM-AA
Remove the axle vent line tube from the
top of the driver side shock and the inside
frame rail.
Remove the vacuum line clip from the
passenger side engine cross member.
Mark the drive shaft to pinion orientation,
then remove the drive shaft from the front
differential. Tape the u joint caps to keep
them from falling off / damage while
working. Retain factory hardware.
Remove the transfer case skid plate. Re-
tain factory hardware.

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849-27701-IM-AA
Leave the axle hanging from the shocks.
Place a suitable jack under the tie rod
ends close to the knuckles.
Remove the factory radius arms and dis-
card arms. Retain factory hardware for the
upper axle bolt and frame pivot bolt.
Using jacks under the tie rods to roll the
axle toward the rear. Install ReadyLIFT
radius arms into axle using factory hard-
ware for the upper bolt and provided cam
bolt for the lower. For 4” kit, cam plate
should be pointed toward the rear of the
vehicle. Tighten radius arm to axle bolts
to 200 ft-lbs.
Rotate the axle until you can line up the
ReadyLIFT radius arms with the factory
hole. Install using factory hardware. Do
not tighten at this time.
IMAGE
NEEDED
IMAGE
NEEDED
IMAGE
NEEDED

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949-27701-IM-AA
Remove the jacks from under the tie rod
ends and place under the axle.
Remove the sway bar from the frame and
let hang. Retain factory hardware.
Remove the track bar at the track bar
bracket. Let hang out of the way. Retain
factory hardware.
Remove the tie rod end at the pitman
arm. Strike the pitman arm with a dead
blow hammer to dislodge the taper. Re-
tain factory hardware.

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1049-27701-IM-AA
Remove the steering stabilizer from the
frame. Retain factory hardware.
Remove the steering stabilizer nut from
the tie rod. Use an air hammer or other
suitable device to dislodge the taper.
Remove the shock from the axle. Retain
factory hardware.
Lower the axle enough to remove the
front springs. Remove the shock from the
frame. Discard factory shocks and springs.

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1149-27701-IM-AA
Remove the factory bump stop by grab-
bing and pulling it out of its mount using a
twisting/pulling motion. Retain factory
bump stop.
Mark a line across the edge of the outer
lip of the bump stop mount parallel to the
frame. Remove the bump stop mount
from the frame.
Install the ReadyLIFT bump stop exten-
sion to the frame by threading it into the
existing bolt hole. Use a punch or similar
tool in the holes of the mount and tighten.
Install the bump stop mount to the exten-
sion using M8 nut and washer.
Remove the bump stop mount and use a
suitable cutting device, trim off the
marked edge. This is for spring clearance
under suspension full droop and articula-
tion. Paint the exposed metal with a quali-
ty rust preventative paint.

www.ReadyLIFT.com - Phone: [phone]
1249-27701-IM-AA
Re-install bump stop mount to the Ready-
LIFT extension making sure the cut edge
faces to the outside of the vehicle. Torque
to 5 ft-lbs.
Remove factory track bar bracket by re-
moving the 2 vertical bolts and 3 horizon-
tal bolts. Retain factory hardware.
Remove the pitman arm nut. Using a pit-
man arm puller, remove the pitman arm
from the gear box. Clean off any debris
off the sector shaft. Coat the sector shaft
splines with a light duty liquid based lubri-
cant or oil.
Install the ReadyLIFT pitman arm using
the factory nut. Remove the nut, and
clean off any lubricant from the sector
shaft and pitman arm nut threads and ap-
ply a liberal amount of thread locker. Run
tight. Use a chain or other suitable strap
through the pitman arm tie rod mounting
hole to the passenger side frame rail to
keep gear box from turning. Torque the
pitman arm nut to 450 ft-lbs.

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1349-27701-IM-AA
Install the ReadyLIFT track bar mount to
the frame using factory hardware. Torque
to 120 ft-lbs.
Install the factory isolator onto the Ready-
LIFT springs, and then the springs onto
the axle making sure to clock the dead
end of the spring into the spring lock.
Raise the axle enough to hold the springs
into place. Install the front extended
length shock to the frame using provided
hardware and to the axle using factory
hardware. Do not tighten at this time.
Install the track bar into the ReadyLIFT
track bar mount using the factory hard-
ware and the ReadyLIFT offset square
washers. Make sure the offset is closest to
the driver side, as shown.
Loosen the tie rod adjuster and flip the tie
rod 180 degrees and install to the Ready-
LIFT pitman arm using factory hardware.
Torque to 70 ft-lbs. Install the safety
keeper and cotter pin.

www.ReadyLIFT.com - Phone: [phone]
1449-27701-IM-AA
Install the ReadyLIFT steering stabilizer
bracket to the frame using M12 x 35mm
bolt and washer. Do not tighten until the
stabilizer has been test fit so as to estab-
lish the brackets final orientation.
Install the ReadyLIFT steering stabilizer
bracket to the tie rod using M12 x 55mm
bolt, washers, cone adapter, and nut.
Cone adapter will install from the bottom
going up. Do not tighten at this time. The
stabilizer must be test fit to establish the
bracket's final orientation.
Install the steering stabilizer to the brack-
ets using M12 x 70mm bolts, washers,
and nuts. Mark the orientation of the
brackets to the tie rod end and frame
mount. Remove the stabilizer. Torque the
mount hardware to 45 ft-lbs. Reinstall the
steering stabilizer and torque hardware to
45 ft-lbs.
Install aftermarket front shock. Torque
top hardware to 35 ft-lbs. Do not tighten
lower hardware at this time. IMAGE
NEEDED

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1549-27701-IM-AA
Make a mark 2.5” below the original vacu-
um line mount on the passenger side en-
gine cross member. Drill a hole using 3/8”
drill bit. DO NOT drill into the oil pan. In-
stall the vacuum line clip into the newly
drilled hole.
Locate the forward hole on the driver side
spring mount on the bottom of the frame
rail. Drill into frame rail using 3/8” drill bit.
Install the differential vent line clip into
the hole.
Zip tie the driver side vacuum line to the
vent tube making sure that it can not be
pinched by the bump stop when the sus-
pension cycles.
Install the ReadyLIFT brake line exten-
sions to the factory brackets using 5/16” x
3/4” bolts, washers, and nuts. Install
bolts facing outwards.
Driver side: gently pull down on the metal
line until you can get the ReadyLIFT
bracket to line up with the factory holes.

www.ReadyLIFT.com - Phone: [phone]
1649-27701-IM-AA
Passenger side: gently unbend the metal
line until you can line up the ReadyLIFT
bracket locking tang into the original bolt
hole. Make sure to not kink the metal line.
Install using factory hardware. Torque to
5 ft-lbs. Do not over tighten and strip the
threads.
Install the ReadyLIFT sway bar brackets
to the frame using factory hardware.
Torque to 45 ft-lbs.
Install sway bar to brackets using provid-
ed hardware. Torque to 45 ft-lbs.
Install the front wheels. Lower the vehicle to the ground. Torque the lug nuts to the
wheel manufacturers specs. Jounce the vehicle a few times to settle it to the new ride
height. Install the front drive shaft using the factory hardware with a drop of thread
locker. Torque to 26 ft-lbs, then the upper shock hardware to 30 ft-lbs, the lower
shock hardware to 65 ft-lbs, the radius arm hardware to 200 ft-lbs, track bar at the
bracket to 350 ft-lbs.
Block the front tires and raise the rear of the vehicle using a suitable jack. Support
with jack stands at each frame rail in front of the rear leaf spring hangers.

www.ReadyLIFT.com - Phone: [phone]
1749-27701-IM-AA
If your vehicle is equipped with a rear
sway bar, remove the brackets from the
frame and let the sway bar hang out of
the way. Retain factory hardware.
Support the axle with a suitable jack. Re-
move the rear shocks from the axle and
frame. Retain factory hardware.
Loosen but do not remove the passenger
side u-bolts. Remove the driver side u-
bolts completely and lower the axle.
Install the ReadyLIFT driver side block (D
is cut into the block under the bump stop
tang) and raise the axle lining the center
pins up. Install using the provided u-bolts
and nuts but do not fully tighten at this
time. Repeat steps for the passenger side.
(P is cut into the block under the bump
stop tang)

www.ReadyLIFT.com - Phone: [phone]
1849-27701-IM-AA
If the vehicle is equipped with the factory
sway bar, install the ReadyLIFT rear sway
bar brackets to the frame using factory
hardware. Torque to 45 ft-lbs.
Install the factory sway bar bracket to the
ReadyLIFT drop bracket using M12 x
35mm bolts, washers, and nuts. Torque to
45 ft-lbs.
If equipped with a 2 piece driveline, re-
move the bolts holding the carrier bearing
to the frame. Install the ReadyLIFT carrier
bearing spacer between the carrier bear-
ing and frame using 7/16” bolts, washers
and a drop of thread locker. Torque to 50
ft-lbs.
Install the extended length rear shocks using factory hardware. Make sure to install in
the proper orientation for the shock that you have (inverted or standard mount). Do
not tighten at this time. Install the wheels and lower the vehicle to the ground.
Torque the lug nuts to the wheel manufacturers specs. Jounce the vehicle to settle it
to the new ride height. Torque the shock hardware to 65 ft-lbs, and the u-bolts to 110
ft-lbs. Reconnect the vehicle power source at the ground terminal on both batteries.
Have the alignment set to factory specs. Adjust steering wheel center and toe before
driving or you could have dash warning lights come on.

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1949-27701-IM-AA
FAILURE TO PERFORM THE POST INSPECTION CHECKS MAY RESULT IN VEHICLE
COMPONENT DAMAGE AND/OR PERSONAL INJURY OR DEATH TO THE DRIVER
AND/OR OTHERS.
Final Checks & Adjustments
Once the vehicle is lowered to the ground, check all parts which have rubber or urethane
components to ensure proper torque. Torque lug nuts to the wheel manufacturer specs.
Move vehicle backwards and forwards a short distance to allow suspension components to
adjust. Turn the front wheels completely left then right and verify adequate tire, wheel,
brake line, and ABS wire clearance. Test and inspect steering, brake and suspension compo-
nents for tightness and proper operation. Inspect brakes hoses and ABS lines for adequate
slack at full extension, adjust as necessary.
RECHECK ALL HARDWARE FOR PROPER TORQUE VALUES AFTER 500 MILES, AND
THEN PERIODICALLY AT EACH SERVICE INTERVAL THERAFTER.
Vehicle Handling Warning
Increasing the height of your vehicle raises the center of gravity and can affect stability and
control. Use caution on turns and when making steering corrections.
Vehicles with larger tires and wheels will handle differently than stock vehicles. Take time to
familiarize yourself with the handling of your vehicle.
Wheel Alignment/Headlamp Adjustment
It is necessary to have a proper and professional wheel alignment performed by a certified
alignment technician. Align the vehicle to factory specifications. It is recommended that
your vehicle alignment be checked after any off-road driving.
In addition to your vehicle alignment, for your safety and others, it is necessary to check
and adjust your vehicle headlamps for proper aim and alignment. If the vehicle is equipped
with active or passive safety/collision monitoring and/or avoidance systems including, but
not limited to, camera- or radar-based systems, check and adjust your vehicle’s systems for
proper aim and function.
Driver Passenger Tolerance Total / Split
Camber -0.3 -0.3 +/- 0.5 +0.0
Caster +3.0 +3.0 +/- 0.5 +0.0
Toe +.07 +.07 +/-0.05 +.14
RECOMMENDED ALIGNMENT SPECS