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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
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Description
2015-2020 F-150 6" MAX 3.3 Lift Kit (42-25640)Description Upgrade your F 150 with ReadyLift's 6" MAX 3. 1 lift kit. Engineered to deliver unmatched stance, performance, and capability without compromising any other suspension components, this kit includes everything necessary to conquer any terrain with precise suspension control and articulation. Featuring laser cut, fabricated HD steel cross members, DOM tube steel upper control arms with corrected ball joint angles, torsion arm brackets, and
Description
Upgrade your F-150 with ReadyLift's 6" MAX 3.1 lift kit. Engineered to deliver unmatched stance, performance, and capability without compromising any other suspension components, this kit includes everything necessary to conquer any terrain with precise suspension control and articulation.
Part Number: 42-25640
Features
- Unmatched control and performance
- Provides 6" of lift
- Falcon 3.3 series struts and shocks
- Fast Adjust Dampers
- Upgraded DOM tube steel upper control arms with corrected ball joint angles
- 3.3 Fast Adjust struts with rear adjustable piggyback shocks
- Ideal for daily driving, off-road excursions, and tow/haul duties
- Longer rear sway bar end links
- Heavy-duty cast iron knuckle
- Unusually robust steel skid plates
Includes:
- CROSSMEMBER, FRONT
- CROSSMEMBER, REAR
- SKID PLATE
- CROSS MEMBER BOX
- DIFFERENTIAL DROP, DRIVER
- DRIVER DIFFERENTIAL SUPPORT BRACKET
- DIFFERENTIAL DROP, PASSENGER
- PASSENGER DIFFERENTIAL SUPPORT BRACKET
- SWAY BAR DROP DOWN BRACKETS - LEFT (DRIVER)
- SWAY BAR DROP DOWN BRACKETS - RIGHT (PASSENGER)
- MACHINED FRONT DRIVE LINE SPACER
- F-150 CAST KNUCKLE, DRIVER
- KNUCKLE BOX
- F-150 CAST KNUCKLE, PASSENGER
- KNUCKLE BOX
- REAR BRAKELINE DROP BRACKET
- 16MM Carrier Bearing Spacer
- Driver Block
- Passenger Block
- U Bolt Kit
- ALIGNMENT CAM BOLT KIT
- F-150 FALCON 3.3 COILOVER FR LFT
- F-150 FALCON 3.3 COILOVER FRT RT
- F-150 6" REAR SHOCK - FALCON
- DIFF BREATHER VENT
- FRONT BRAKELINE SUPPORT BRACKET
- REAR E-BRAKE DROP BRACKET
- F-150 UPPER CONTROL ARM KIT
- HARDWARE
Additional Info
Tire Fitment:
- Tire size 295/65R20 with a 20 x 9” with a 0 offset wheel
- Max tire with trimming 37 x 12.50” with a 20 x 9” with a 0 offset wheel
Notes
- Does not fit vehicles equipped with CCD, 2WD, or Raptor models
- Driver Rear Control Arm Pocket will need to be trimmed to offer clearance for the rear cross member
Installation
-
ReadyLIFT Suspension Inc. and/or Dirty Garage are NOT responsible for any damage or failure resulting from improper installation.
- Click Here to view installation instructions
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 29 reviews
Sort
Product Reviews
★★★★★ 5
Well made
Size: Large, Color: Black (6-pairs), Number of Items: 6
These are the only socks that my 12 year old Grandson will wear. He's very picky. LOL
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
Comfort and durability
Size: Large, Color: White (6-pairs), Number of Items: 6
Socks work really good. I have very rough and dry feet that tear up my bed sheets. They hold up to my destructive feet. They are soft and comfy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
★★★★★ 5
So will not write down your foot
Size: Medium, Color: (001) Black / Black / Castlerock
I love these socks. They have a little bit of gel on the top of the heel for support in your tennis shoes and so your socks don’t write down. Very good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfy and Stay Put
Size: Medium, Color: (002) Black / Black / Halo Gray
These socks are honestly great. They’re super thin and light, so once you have them on, you kind of forget they’re even there. No bulky feeling in your shoes at all.
The best part is they actually stay on. I hate no-show socks that slide down after five minutes, and these don’t do that. The little grip on the heel really works, so you’re not constantly adjusting them all day.
They’re breathable too, which is nice if your feet run warm. They dry fast and don’t get that gross sweaty feeling. And there’s no annoying seam on the toe, so nothing rubs or feels uncomfortable.
Basically, they’re just comfy, stay put, and don’t cause problems — which is all I want from socks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
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