Home / Shop / ReadyLift Suspension Leveling Kits for 2011-2025 F-250 SUPER DUTY, 2017-2025 F-350 2017-2021 F-450 DUTY - 66-2740 Lift Block, 4.0 in. Tapered Block 1 Piece Drive Shaft, Ford, Kit

ReadyLift Suspension Leveling Kits for 2011-2025 F-250 SUPER DUTY, 2017-2025 F-350 2017-2021 F-450 DUTY - 66-2740 Lift Block, 4.0 in. Tapered Block 1 Piece Drive Shaft, Ford, Kit

SKU: RLS66-2740

Suspension Leveling & Lift Kits

Readylift Suspension

ReadyLift Suspension Leveling Kits for 2011-2025 F-250 SUPER DUTY, 2017-2025 F-350 2017-2021 F-450 DUTY - 66-2740 Lift Block, 4.0 in. Tapered Block 1 Piece Drive Shaft, Ford, Kit

SKU: RLS66-2740

Suspension Leveling & Lift Kits

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

ReadyLift Suspension leveling kits are the fastest, safest, and least expensive way to level your truck or make room for oversized wheels and tires as large as 37 in. on most full size trucks (varies by vehicle).

Regardless of your suspension, get up to 3 in. of lift without a major hassle or sacrificing ride quality and comfort. ReadyLift thoroughly tests each kit to ensure that your truck will be leveled without overloading or adding excessive strain to any of your factory suspension components.

Additional features of ReadyLift Suspension leveling kits:

* Custom-designed for your specific year, make, and model
* Ideal for eliminating sag caused by a winch, heavy bumper, or plow
* Most kits cost 1/3 less than their competition.
* Fast, simple installation takes about 1/3 the time of other kits
* Steel kits have a durable powdercoated finish
* Aluminum kits are corrosion-resistant
* Coil spring spacers, expertly indexed forged torsion key spacers, and steel tower extensions are available
* Custom, progressive-wound coil springs are offered for specific applications
* Torsion keys have up to a 100 rating on the Rockwell(B) index scale, 25 percent stronger than most OEM torsion keys
* All mounting hardware is included

Note: A wheel alignment is recommended after installation of your new ReadyLift leveling kit.

Part Type

Suspension Leveling & Lift Kits

Data: v4.2 - Upd: 2026-09-29 18:23:43

Specifications

Product Attributes - Brand: ReadyLift Suspension
Product Attributes - Manufacturer's Part Number: 66-2740
Product Attributes - Part Type: Suspension Leveling & Lift Kits
Product Attributes - Product Line: ReadyLift Suspension Leveling Kits
Product Attributes - UPC: 804879578642
Product Attributes - Front Lifted Amount Range (in): 0.00
Product Attributes - Rear Lifted Amount Range (in): 4.00
Product Attributes - Lift Style: Suspension Leveling Kit
Product Attributes - Primary Rear Lift Component: Leaf spring block
Product Attributes - Front Shocks/Struts Included: No
Product Attributes - Rear Shocks/Struts Included: No
Product Attributes - Brake Lines Included: No
Product Attributes - Hardware Included: Yes
Product Attributes - FMVSS 126 Certification: No
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Notes: For use on 4WD trucks with 1-piece drive shaft.

Reference Information

Brand Name/s	Readylift Suspension
StreetFX SKU	rls66-2740
SFX Item ID	5008651
Supplier Item Code	5008651
Manufacturer SKU	66-2740
Manufacturer UPC	804879578642
Alternative References	F-250, F-350, F-450

Compatibility

Application Data

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Crew Cab Pickup
CC	6210
CID	379
Drivetrain	4WD
Ending Year	2022
Engine Family	FORD MODULAR V8 FLEX FUEL
Engine Size	6.2L/379
Engine Type	V8
Engine VIN Code	6
Liter	6.2
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	KING RANCH

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Crew Cab Pickup
CC	6210
CID	379
Drivetrain	RWD
Ending Year	2022
Engine Family	FORD MODULAR V8 FLEX FUEL
Engine Size	6.2L/379
Engine Type	V8
Engine VIN Code	6
Liter	6.2
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	KING RANCH

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Crew Cab Pickup
CC	6651
CID	406
Drivetrain	RWD
Ending Year	2022
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	T
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	KING RANCH

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Crew Cab Pickup
CC	6651
CID	406
Drivetrain	4WD
Ending Year	2025
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	T
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	KING RANCH

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2020
Body Style	Crew Cab Pickup
CC	7292
CID	445
Drivetrain	RWD
Ending Year	2022
Engine Family	FORD 7X V8 GAS
Engine Size	7.3L/445
Engine Type	V8
Engine VIN Code	N
Liter	7.3
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	KING RANCH

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2020
Body Style	Crew Cab Pickup
CC	7292
CID	445
Drivetrain	4WD
Ending Year	2025
Engine Family	FORD 7X V8 GAS
Engine Size	7.3L/445
Engine Type	V8
Engine VIN Code	N
Liter	7.3
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	KING RANCH

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2023
Body Style	Crew Cab Pickup
CC	6651
CID	406
Drivetrain	4WD
Ending Year	2025
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	M
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	KING RANCH

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Crew Cab Pickup
CC	6210
CID	379
Drivetrain	4WD
Ending Year	2022
Engine Family	FORD MODULAR V8 FLEX FUEL
Engine Size	6.2L/379
Engine Type	V8
Engine VIN Code	6
Liter	6.2
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Extended Cab Pickup
CC	6210
CID	379
Drivetrain	4WD
Ending Year	2022
Engine Family	FORD MODULAR V8 FLEX FUEL
Engine Size	6.2L/379
Engine Type	V8
Engine VIN Code	6
Liter	6.2
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Crew Cab Pickup
CC	6210
CID	379
Drivetrain	RWD
Ending Year	2022
Engine Family	FORD MODULAR V8 FLEX FUEL
Engine Size	6.2L/379
Engine Type	V8
Engine VIN Code	6
Liter	6.2
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Extended Cab Pickup
CC	6210
CID	379
Drivetrain	RWD
Ending Year	2022
Engine Family	FORD MODULAR V8 FLEX FUEL
Engine Size	6.2L/379
Engine Type	V8
Engine VIN Code	6
Liter	6.2
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Crew Cab Pickup
CC	6651
CID	406
Drivetrain	RWD
Ending Year	2022
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	T
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Extended Cab Pickup
CC	6651
CID	406
Drivetrain	RWD
Ending Year	2022
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	T
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Extended Cab Pickup
CC	6651
CID	406
Drivetrain	4WD
Ending Year	2024
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	T
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2011
Body Style	Crew Cab Pickup
CC	6651
CID	406
Drivetrain	4WD
Ending Year	2025
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	T
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2020
Body Style	Crew Cab Pickup
CC	7292
CID	445
Drivetrain	RWD
Ending Year	2022
Engine Family	FORD 7X V8 GAS
Engine Size	7.3L/445
Engine Type	V8
Engine VIN Code	N
Liter	7.3
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2020
Body Style	Extended Cab Pickup
CC	7292
CID	445
Drivetrain	RWD
Ending Year	2022
Engine Family	FORD 7X V8 GAS
Engine Size	7.3L/445
Engine Type	V8
Engine VIN Code	N
Liter	7.3
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2020
Body Style	Extended Cab Pickup
CC	7292
CID	445
Drivetrain	4WD
Ending Year	2024
Engine Family	FORD 7X V8 GAS
Engine Size	7.3L/445
Engine Type	V8
Engine VIN Code	N
Liter	7.3
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2020
Body Style	Crew Cab Pickup
CC	7292
CID	445
Drivetrain	4WD
Ending Year	2025
Engine Family	FORD 7X V8 GAS
Engine Size	7.3L/445
Engine Type	V8
Engine VIN Code	N
Liter	7.3
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2023
Body Style	Extended Cab Pickup
CC	6651
CID	406
Drivetrain	4WD
Ending Year	2024
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	M
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2023
Body Style	Crew Cab Pickup
CC	6651
CID	406
Drivetrain	4WD
Ending Year	2025
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	M
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2025
Body Style	Crew Cab Pickup
CC	6801
CID	415
Drivetrain	4WD
Ending Year	2025
Engine Family	FORD MODULAR V8 FLEX FUEL
Engine Size	6.8L/415
Engine Type	V8
Engine VIN Code	A
Liter	6.8
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LARIAT

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2018
Body Style	Crew Cab Pickup
CC	6651
CID	406
Drivetrain	4WD
Ending Year	2022
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	T
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LIMITED

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2023
Body Style	Crew Cab Pickup
CC	6651
CID	406
Drivetrain	4WD
Ending Year	2024
Engine Family	POWERSTROKE V8 DIESEL
Engine Size	6.7L/406
Engine Type	V8
Engine VIN Code	M
Liter	6.7
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	LIMITED

Application Notes	Rear Block Kit; 4 in. Taper Blocks; For Vehicles w/1 Pc. Drive Shaft
Beginning Year	2017
Body Style	Crew Cab Pickup
CC	6210
CID	379
Drivetrain	4WD
Ending Year	2022
Engine Family	FORD MODULAR V8 FLEX FUEL
Engine Size	6.2L/379
Engine Type	V8
Engine VIN Code	6
Liter	6.2
Make	FORD
Model	F-250 SUPER DUTY
Region	USA
Submodel	PLATINUM

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ReadyLift Suspension Leveling Kits for 2011-2025 F-250 SUPER DUTY, 2017-2025 F-350 2017-2021 F-450 DUTY - 66-2740 Lift Block, 4.0 in. Tapered Block 1 Piece Drive Shaft, Ford, Kit

ReadyLift Suspension Leveling Kits for 2011-2025 F-250 SUPER DUTY, 2017-2025 F-350 2017-2021 F-450 DUTY - 66-2740 Lift Block, 4.0 in. Tapered Block 1 Piece Drive Shaft, Ford, Kit

Description

Part Type

Specifications

Reference Information

Compatibility

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