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44-21620 2021-up Ford F-150 6.0" LIFT Kit
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.
(877) 759-9991
MON-FRI 7AM-4PM PST
OR
EMAIL: support@readylift-ami.COM
WEBSITE: ReadyLIFT.COM
**Please retain this document in your vehicle at all times.**
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 (877) 759-9991 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.
www.ReadyLIFT.com - Phone: (877) 759-9991
44-21620-IM-AA
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Summary of Contents for ReadyLift 44-21620
- Page 1 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.
- Page 2 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.
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Page 3: Important Note
Always measure the vehicle ride height prior to beginning installation. A lifted vehicle may have different headlight aim performance. ReadyLIFT recommends marking and record- ing the headlight beam position before kit installation and then adjusting, if necessary, the headlamps to the same height settings after kit installation. - Page 4 PRE-INSTALLATION MEASUREMENTS: It is imperative that you record the following measurements and factory components in the tables below. ReadyLIFT tests and records as much data from each application as available at the time of product development. Vehicle manufacturers may change components or add models with different options.
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Page 5: Bill Of Materials
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 or check out the dealers tab on our Website for authorized installers . - Page 6 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 safe- ty jacks. Otherwise, park vehicle on a clean flat surface and block the rear wheels for safety.
- Page 7 Using a dead blow hammer or similar tool, strike the knuckle on the side to dislodge the ball joint taper. Loosen but do not remove the (3) top strut nuts. Remove the lower strut nuts. Retain the factory mounting hard- ware. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 8 Retain the factory mounting hard- ware. Remove the brake line bracket from the knuckle. Discard the factory mounting hard- ware. Remove the ABS sensor wire from the brake line bracket. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 9 Remove the brake caliper mounting bolts from brake caliper. NOTE: CAREFULLY HANG CALIPER FROM FRAME, ENSURE THE CALIPER IS NOT HANGING FROM BRAKE LINE NOR ARE THE BRAKE LINES BEING STRETCHED. Retain factory mounting bolts. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 10 Retain the factory mounting bolt. NOTE: ENSURE THE AREA AROUND THE SENSOR IS CLEANED BEFORE REMOVAL AND INSTALLA- TION. Remove the CV shaft retainer nut. Do not discard, nut will be install in later steps. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 11 Discard the cross member and hard- ware. NOTE: IT MAY BE NECESSARY TO USE A WIRE BRUSH TO REMOVE THE MATERIAL FROM THE THREADS OF THE FOUR BOLTS THAT ATTACH THE OE REAR CROSS MEMBER. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 12 NOTE: THIS STEP IS OPTIONAL BUT THIS WILL MAKE HANDLING THE DIFFERENTIAL MUCH EASIER. Using an appropriate jack, support the deferential. With the diff supported, remove the driver side diff mounting bolt. Retain the factory mounting hard- ware. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 13 SIST IN THE REMOVAL PROCESS. Measure from the outside edge of the driver side rear control arm pocket 2 5/8”. Mark a vertical line on both the front and rear of the control arm pocket. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 14 M14 washer and nut at this time. Ensure the diff drop is oriented so the window on the diff drop is point forward. Attach the differential breather tube ex- tension to the differential breather elbow. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 15 TO FRONT PASSING THOUGH THE SWAY BAR DROP BRACKET, CONTROL ARM POCKET, REAR CROSSMEMBER AND FINAL THROUGH THE CON- TROL ARM POCKET AGAIN. NOTE: LEAVE DRIVER SIDE WASHER AND NUT OFF OF THE FRONT SIDE. ADDITIONAL STEPS TO COME. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 16 M14 x 100mm bolt already in- stalled, as well as the supplied M14 x 35mm bolt, washer and lock nut. Do not tighten at this time. NOTE: ENSURE THE BRACKET IS INSTALLED WITH THE NOTCH UP. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 17 Torque the M10 hardware to 45 ft-lbs Torque the sway bar hardware to 45 ft-lbs Torque all M14 diff hardware to 95 ft-lbs Torque all M12 diff hardware to 65 ft-lbs Torque the crossmember hardware to ft-lbs www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 18 Torque the lower M12 nuts to 90 ft-lbs. Install the passengers side CV shaft (If re- moved). Install the oil drip tray that is located on the driver side over the steering rack. removed). www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 19 PLACE. With the knuckle in place install the EIWE actuator onto knuckle using factory hard- ware. Torque the factory hardware to 132 in-lbs NOTE: BE SURE THE GEARS ARE LINED AND EN- GAGED PROPERLY. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 20 NOTE: ENSURE THE AREA AROUND THE SENSOR IS CLEANED BEFORE INSTALLATION. Install dust shield to knuckle using factory hardware. Torque the factory hardware to 5 ft-lbs. Carefully install the brake rotor onto the hub assembly. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 21 Torque the factory nut to 18 ft-lbs. Install the CV shaft retainer nut dust cov- Install the brake line relocation bracket the frame using the factory bolt. Torque the factory hardware to 15 ft-lbs. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 22 Install vacuum line onto brake line brack- Using the supplied wire ties secure the loose abs/vacuum/brake lines. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 23 ABS/traction control lights may acti- vate. Turn the wheels from lock to lock and make sure the brake lines and ABS rout- ing clears all suspension components adequately. Reposition if necessary. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 24 Remove the driver side u-bolts completely and discard. Lower the axle enough to re- move the factory lift block making sure that all brake lines and ABS lines do not get over extended. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 25 Install the rear sensor bracket on the for- ward axle center pin in the factory orien- tation. Torque the factory nut to ft/lbs. NOTE: THIS STEP IS ONLY NECESSARY WHEN INSTALLING ON VEHICLES EQUIPPED WITH AUTO HEADLIGHT LEVELING. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 26 Adjust as necessary. Have wheel alignment performed by qualified alignment technician. Have the align- ment set to the recommended specs at the end of the instructions. www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
- Page 27 RECOMMENDED ALIGNMENT SPECS Front Driver Passenger Tolerance Total / Split Camber -0.2 -0.2 +/- 0.5 +0.0 Caster +4.0 +4.0 +/- 0.5 +0.0 +.08 +.08 +/-0.05 +.14 www.ReadyLIFT.com - Phone: (877) 759-9991 44-21620-IM-AA...
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