A strong rear block lift kit pairs a clearly stated lift height with vehicle-specific fitment and the longer U-bolts needed for installation; it suits truck owners seeking rear lift or added room for larger tires. These ten options cover Silverado and Sierra, Tacoma and Tundra, F-150, Ford Super Duty, and Dodge Ram applications. Lift heights range from 2 to 4 inches, while listed block materials include aluminum, carbon steel, and cast iron.
Some kits also call out cross-gusset designs, powder-coated finishes, or particular driveshaft and suspension restrictions. Start by matching your exact truck configuration and existing rear block setup, then compare the kit’s stated lift, construction, and included hardware.
The listings vary in fitment detail, so confirm the manufacturer’s application notes before ordering or installing.
The Dynofit Silverado Sierra 3-Inch Kit is the Best Overall pick because it fits Silverado and Sierra 1500 trucks, uses CNC-machined carbon steel blocks, and includes extended U-bolts. Its stated fitment covers 2WD and 4WD applications, and the listing specifies a two-year manufacturer warranty. Choose it when your truck matches the listed application and you want a 3-inch rear block kit with the key mounting hardware included; verify your vehicle configuration against the listing before purchase.
Our Top Picks
Best OverallDynofit Silverado Sierra 3-Inch Kit
Fits Silverado and Sierra 1500 2WD and 4WD applications, with CNC-machined carbon steel blocks, extended U-bolts, and a listed two-year warranty.
View on Amazon
High-Grade U-BoltsHHCSOP Silverado Sierra 3-Inch Kit
Covers Silverado 1500 and specified Sierra 1500 applications, and lists grade 12.9 extended U-bolts with a cross-gusset plate-locked block design.
View on Amazon
Broad FitmentAutsurles Silverado Sierra 3-Inch Kit
Lists Silverado and Sierra applications alongside several older Chevrolet and GMC models, with two rear blocks, extended square U-bolts, and a two-year warranty.
View on Amazon- Toyota 3-Inch Lift Dynofit Tacoma Tundra 3-Inch Kit
- Toyota 2-Inch Lift HHCSOP Tacoma Tundra 2-Inch Kit
Compare Rear Block Lift Kits by Fitment and Lift Height
| # | Product | Material | Material Type | Buy |
|---|---|---|---|---|
| 1 | 1. Dynofit Silverado Sierra 3-Inch KitBest Overall | Carbon Steel | Carbon Steel | View on Amazon |
| 2 | 2. HHCSOP Silverado Sierra 3-Inch KitHigh-Grade U-Bolts | Aluminum | Aluminum | View on Amazon |
| 3 | 3. Autsurles Silverado Sierra 3-Inch KitBroad Fitment | Aluminum | Aluminum | View on Amazon |
| 4 | 4. Dynofit Tacoma Tundra 3-Inch KitToyota 3-Inch Lift | Carbon Steel | Carbon Steel | View on Amazon |
| 5 | 5. HHCSOP Tacoma Tundra 2-Inch KitToyota 2-Inch Lift | Aluminum | Aluminum | View on Amazon |
| 6 | 6. KSP F-150 3-Inch KitF-150 lift by drivetrain | Carbon Steel | Carbon Steel | View on Amazon |
| 7 | 7. KSP Silverado Sierra 2-Inch KitCorrosion-conscious Chevy GMC lift | Carbon Steel | Carbon Steel | View on Amazon |
| 8 | 8. FLYCLE Silverado Sierra 2-Inch KitTwo-inch Silverado leveling | Aluminum | Aluminum | View on Amazon |
| 9 | 9. Autsurles Dodge Ram 2-Inch KitDodge Ram steel-block design | Aluminum | Aluminum | View on Amazon |
| 10 | 10. ReadyLift Super Duty 4-Inch KitFord Super Duty two-piece driveshaft | Cast Iron | Cast Iron | View on Amazon |
Detailed Reviews: Best Rear Block Lift Kit

#1 · Best Overall
1. Dynofit Silverado Sierra 3-Inch Kit
- Material: Carbon Steel
- Material Type: Carbon Steel
Best for: Steel Silverado three-inch lift.
Why it ranks #1: Fits Silverado and Sierra 1500 2WD and 4WD applications, with CNC-machined carbon steel blocks, extended U-bolts, and a listed two-year warranty.
CNC-machined steel blocks with a 63.5 mm width define dynofit’s 3-inch Silverado and Sierra rear kit. The stated width provides contact with the leaf springs, while the extended U-bolts and broad 2007–2024 fitment make it a hardware-focused option for owners seeking a taller rear lift.
Dynofit includes two 3-inch blocks and four extra-long U-bolts, with 10.9–12.9 grade bolts, 9/16 thread pitch, and thicker washers specified. The 63.5 mm block width is described as maintaining safety contact with the leaf springs, while CNC-machined carbon steel is specified for compression strength. Its stated 2007–2024 fitment covers both 2WD and 4WD Silverado 1500 and Sierra 1500 models, giving the application range useful breadth.
- 3-inch rear lift blocks
- CNC-machined carbon steel
- 63.5 mm width for leaf-spring contact
- Includes four extra-long U-bolts and thicker washers
- Fitment is limited to Silverado 1500 and Sierra 1500 model years 2007–2024.
Skip it if you need a lift for a pre-2007 Silverado or Sierra 1500; Autsurles’ 3-inch kit lists older applications.
Choose this dynofit kit for a listed 2007–2024 Silverado 1500 or Sierra 1500 when a 3-inch rear lift and steel blocks fit the plan. Its application list does not cover earlier model years.
Full product details
| Brand | dynofit |
|---|---|
| Included Components | 2-Piece 3inch Block, 4-Piece Extra Long U Bolts, Instructions |
| Manufacturer | FASTFREE |
| Part Number | 9R202101-30 |
| Manufacturer Warranty Description | Manufacturer Warranty for 2 Years |
| Material | Carbon Steel |
| Model Number | 2007-2024 Silverado Sierra 1500 |
Listed on Amazon as: dynofit 3 Inch Rear Lift Blocks for Silverado 1500 Sierra 1500 2WD 4WD(2007-2024), Leveling Block Kit Compatible with Chevy GMC Pickup, Square Leaf Spring Axle Ubolt Kit
View on Amazon
#2 · High-Grade U-Bolts
2. HHCSOP Silverado Sierra 3-Inch Kit
- Material: Aluminum
- Material Type: Aluminum
Best for: Three-inch Silverado clearance.
Why it ranks #2: Covers Silverado 1500 and specified Sierra 1500 applications, and lists grade 12.9 extended U-bolts with a cross-gusset plate-locked block design.
A 3-inch rear lift paired with extended Grade 12.9 U-bolts defines this HHCSOP kit for Silverado 1500 and select Sierra 1500 trucks. The lift is stated to add ground clearance for larger tires or rims, while its broad listed year range suits owners planning a substantial rear-height change.
The kit’s 3-inch aluminum blocks use a cross-gusset plate locked design, and the supplied extended U-bolts are Grade 12.9 with 9/16-18 thread pitch. Together, those details give installers longer replacement hardware alongside the lift blocks; the bolts can be cut if they prove too long. Listed compatibility covers 2007–2024 Silverado 1500 2WD/4WD and 2007–2019 Sierra 1500 2WD/4WD, with 2019 limited to the old body style.
- 3-inch rear lift
- 6061-T6 aluminum construction
- Cross-gusset plate locked block design
- Extended Grade 12.9 U-bolts can be cut if too long
- Sierra fitment ends at 2019, and that year is limited to the old body style.
Skip it if you have a 2020-or-newer Sierra 1500; dynofit’s 2007–2024 Silverado/Sierra 3-inch kit lists later Sierra years.
This suits Silverado owners in the stated 2007–2024 range seeking a 3-inch rear lift and clearance for larger tires or rims. Sierra buyers must stay within the listed 2007–2019 range and check the 2019 body-style restriction.
Full product details
| Brand | HHCSOP |
|---|---|
| Included Components | Lift Blocks, Extended U-Bolts |
| Manufacturer | HHCSOP |
| Part Number | TK10015 |
| Manufacturer Warranty Description | It is highly recommended that all bolts/nuts be checked for tightness after the first 500 miles and then again every 1,000 miles. |
| Material | Aluminum |
| Model Number | TK10015 |
Listed on Amazon as: 3" Rear Lift Block Kits, Compatible with 2007-2024 Chevrolet Chevy Silverado 1500, 2007-2019 GMC Sierra 1500, 3 inch Rear Leveling Kit Extended Square U-Bolts
View on Amazon
#3 · Broad Fitment
3. Autsurles Silverado Sierra 3-Inch Kit
- Material: Aluminum
- Material Type: Aluminum
Best for: Broad older-truck applications.
Why it ranks #3: Lists Silverado and Sierra applications alongside several older Chevrolet and GMC models, with two rear blocks, extended square U-bolts, and a two-year warranty.
A 3-inch rear lift across a notably broad list of Chevrolet and GMC truck and SUV applications sets this Autsurles kit apart. It includes multiple older K-series and SUV entries alongside Silverado and Sierra 1500 models, giving buyers with varied listed vehicles a wider application list to check.
The kit includes two rear blocks and four extended square leaf-spring U-bolts, with a stated 3-inch rear rise. Autsurles notes that lift height and kit thickness are not a 1:1 ratio because of suspension geometry, and recommends an alignment after installation; that guidance helps set expectations for the resulting change. The listed fitment spans Silverado and Sierra 1500 years as well as K-series pickups, Suburban, Tahoe, and Yukon applications.
- 3-inch stated rear lift
- Lists Silverado and Sierra 1500 applications
- Also lists K-series pickups and several SUVs
- Includes four extended square leaf-spring U-bolts
- An alignment is recommended after installation.
Skip it if you want to avoid a post-installation alignment; dynofit’s 2007–2024 Silverado/Sierra kit does not list an alignment recommendation.
Consider this Autsurles kit if your vehicle appears in its broad Chevrolet and GMC application list and you want a 3-inch rear rise. Plan for the recommended alignment after installation.
Full product details
| Brand | Autsurles |
|---|---|
| Included Components | Rear 3 inch Leveling Kit |
| Item Weight | 13.2 pounds |
| Manufacturer | Autsurles |
| Part Number | XALLK024FK |
| Manufacturer Warranty Description | 2 year |
| Material | Aluminum |
| Model Number | XALLK024FK |
Listed on Amazon as: 3" Rear Leveling Lift Kits Block Kit Compatible with 2WD 4WD Chevy Silverado 1500 1999-2019, GMC Sierra 1500 1999-2020 2pc Rear Lift Block with 4pc Extended Square Leaf Spring Ubolts
View on Amazon
#4 · Toyota 3-Inch Lift
4. Dynofit Tacoma Tundra 3-Inch Kit
- Material: Carbon Steel
- Material Type: Carbon Steel
Best for: Three-inch Toyota rear lift.
Why it ranks #4: Offers a stated 3-inch rear lift for listed Tacoma and Tundra applications, with carbon steel blocks and longer 10.9–12.9-grade U-bolts.
A stated 3-inch rear lift for listed Tacoma and Tundra trucks is dynofit’s central appeal, paired with CNC-machined steel blocks and longer U-bolts. The application includes several Tacoma generations and 2000–2021 Tundra models, but excludes 5-lug Tacoma configurations.
The package specifies two 3-inch blocks, four extended U-bolts, and lug bolts. Dynofit lists 10.9–12.9 grade U-bolts with 9/16 thread pitch and thicker washers, while CNC-machined carbon steel is described as providing compression strength. The compatibility details cover 2005–2015 Tacoma 4WD, 2016–2023 Tacoma 2WD/4WD, and 2000–2021 Tundra 2WD/4WD. The explicit 5-lug Tacoma exclusion is essential to a correct application choice.
- 3-inch stated rear lift
- CNC-machined carbon-steel blocks
- Extended 10.9–12.9 grade U-bolts
- Includes lug bolts and thicker washers
- Does not fit 5-lug Tacoma models.
Skip it if you have a 5-lug Tacoma; HHCSOP’s 2-inch Toyota kit also excludes 5-lug Tacoma models, so neither listed option fits that configuration.
This dynofit kit fits listed Tacoma and Tundra owners seeking a 3-inch rear lift with extended hardware. Tacoma buyers should confirm their lug configuration first, since 5-lug models are explicitly excluded.
Full product details
| Brand | dynofit |
|---|---|
| Included Components | 2Pcs 3 inch block, 4Pcs extended u bolts, lug bolts |
| Manufacturer | dynofit |
| Part Number | 9R213101-3 |
| Manufacturer Warranty Description | Manufacturer Warranty For 12 months |
| Material | Carbon Steel |
| Model Number | 9R213101-3 |
Listed on Amazon as: Dynofit 3 Inch Rear Lift Blocks fit Toyota Tacoma Tundra with Leaf Spring
View on Amazon
#5 · Toyota 2-Inch Lift
5. HHCSOP Tacoma Tundra 2-Inch Kit
- Material: Aluminum
- Material Type: Aluminum
Best for: Tacoma and Tundra fitment.
Why it ranks #5: Provides a 2-inch option for listed Tacoma and Tundra trucks, with grade 12.9 extended U-bolts; the listing excludes 5-lug Tacoma models.
A 2-inch lift block kit covering many Toyota Tacoma and Tundra model years is HHCSOP’s key distinction. Its extended Grade 12.9 U-bolts and cross-gusset locked block design give owners a specified replacement-hardware set for a modest rear lift, while the Tacoma’s lug configuration is a critical fit boundary.
HHCSOP lists aluminum blocks with a cross-gusset plate locked design and CNC machining, paired with extended Grade 12.9 U-bolts using a 9/16-18 thread pitch. The longer bolts can be cut if needed, which gives installers a way to address excess length during fitting. Compatibility spans Tacoma model years 1995–2023 and Tundra years 1999–2021, but the product explicitly excludes 5-lug Tacoma models, making that distinction essential before purchase.
- 2-inch rear lift blocks
- Aluminum construction with CNC machining
- Cross-gusset plate locked design
- Extended Grade 12.9 U-bolts can be cut if too long
- Does not fit 5-lug Tacoma models.
Skip it if you own a 5-lug Tacoma; dynofit’s Tacoma/Tundra 3-inch kit also excludes 5-lug Tacoma models, so it is not an alternative for that configuration.
Consider this for a listed-year Tacoma or Tundra needing a 2-inch rear lift and supplied extended U-bolts. Its clearest boundary is Tacoma configuration: the listing specifically rules out 5-lug models.
Full product details
| Brand | HHCSOP |
|---|---|
| Included Components | Lift Block, Extended U-Bolts |
| Manufacturer | HHCSOP |
| Part Number | TK10031 |
| Manufacturer Warranty Description | It is highly recommended that all bolts/nuts be checked for tightness after the first 500 miles and then again every 1,000 miles. |
| Material | Aluminum |
| Model Number | 2" Rear Lift Block |
Listed on Amazon as: 2" Rear Lift Block Leveling Kit for 1995-2023 Toyota Tacoma Tundra 2WD 4WD
View on Amazon
#6
6. KSP F-150 3-Inch Kit
- Material: Carbon Steel
- Material Type: Carbon Steel
Best for: F-150 lift by drivetrain.
Why it ranks #6: Targets F-150 applications and explains that stock blocks change the added lift; it includes two blocks and four extended U-bolts.
KSP’s 3-inch block produces different additional lift depending on the F-150’s drivetrain and original block, a crucial distinction for this kit. The listing specifies 3 inches on 2004–2020 2WD trucks, but less additional lift on 4WD models because those applications already have stock blocks.
The carbon-steel blocks have a black powder-coated surface, which KSP says offers stronger rust resistance, and the package includes four extended U-bolts plus installation instructions. Fitment covers 2004–2020 F-150 2WD and 4WD models, but the resulting lift varies: 04–08 4WD gains 1 inch, 09–20 4WD gains 1.5 inches, and 2WD gains 3 inches. That breakdown helps buyers set expectations before installation.
- Fits listed 2004–2020 F-150 2WD and 4WD models
- States additional lift by year and drivetrain
- Black powder-coated blocks for rust resistance
- Includes four extended U-bolts and instructions
- 04–08 4WD trucks gain only 1 inch because of the stock block.
Skip it if you need a 3-inch additional lift on a 4WD F-150; the listed stock blocks reduce this kit’s added height on 4WD models.
This is a useful match for F-150 owners who can identify their model year and drivetrain before buying. The stated additional lift is 3 inches on 2WD, but 1 or 1.5 inches on specified 4WD models.
Full product details
| Brand | KSP PERFORMANCE |
|---|---|
| Included Components | 1pc installation instruction, 2pcs lift block, 4pcs extended u bolts |
| Manufacturer | Goldenlion |
| Part Number | FLU209B10903B |
| Manufacturer Warranty Description | 1 Year Manufacturer |
| Material | Carbon Steel |
| Model Number | FLU209B10903B |
Listed on Amazon as: KSP 3" Rear Lift Block Kits for F150 2004-2020,3inch Rear leveling Lift Set
View on Amazon
#7
7. KSP Silverado Sierra 2-Inch Kit
- Material: Carbon Steel
- Material Type: Carbon Steel
Best for: Corrosion-conscious Chevy GMC lift.
Why it ranks #7: Fits Silverado and Sierra 1500 2WD and 4WD applications, with powder-coated carbon steel blocks, a cross-gusset design, and extended U-bolts.
KSP’s cross-gusset plate locked blocks and black powder-coated finish are the defining details of this 2-inch Silverado and Sierra 1500 kit. The finish is specified for stronger rust resistance, while longer 10.9-grade U-bolts provide replacement hardware for compatible 2007–2024 2WD and 4WD trucks.
Two carbon-steel blocks are paired with four extended square U-bolts, so the package specifies both the lifting pieces and longer leaf-spring hardware. KSP lists 10.9-grade bolts with a 9/16 thread pitch, while the cross-gusset plate locked design is intended to provide stronger support. Its black powder-coated surface is stated to resist rust. Fitment covers 2007–2024 Silverado 1500 and Sierra 1500 models in both 2WD and 4WD configurations.
- 2-inch rear lift
- Cross-gusset plate locked block design
- Black powder-coated finish for rust resistance
- Includes four extended square U-bolts
- The listed lift is 2 inches, rather than the 3-inch option some buyers seek.
Skip it if you want a 3-inch rear lift; HHCSOP’s Silverado/Sierra kit supplies that taller listed lift for compatible trucks.
This KSP kit suits Silverado and Sierra 1500 owners within the stated 2007–2024 range who want a 2-inch rear lift with extended square U-bolts. Buyers seeking 3 inches should look elsewhere.
Full product details
| Brand | KSP PERFORMANCE |
|---|---|
| Included Components | 2pcs block |
| Manufacturer | Goldenlion |
| Part Number | 202102 |
| Manufacturer Warranty Description | 1 Year Manufacturer |
| Material | Carbon Steel |
| Model Number | 202102 |
Listed on Amazon as: KSP 2" Rear Lift Kits for Silverado Sierra 1500 2007-2024, 2pcs Lift Block with 4pcs Extended Square U Bolts Rear Lift Sets Compatible With Chevy GMC, 2inch Rear Chassis Leveling Lift Kit
View on Amazon
#8
8. FLYCLE Silverado Sierra 2-Inch Kit
- Material: Aluminum
- Material Type: Aluminum
Best for: Two-inch Silverado leveling.
Why it ranks #8: Covers Silverado and Sierra 1500 applications and includes aluminum 2-inch blocks with U-bolts; its listing notes spacer removal on later models.
A fixed 2-inch rear lift is the defining feature of FLYCLE’s aluminum block kit, giving compatible Silverado and Sierra 1500 owners a modest rear-height change without stepping up to a taller lift. Its stated model coverage spans 1999–2024, making the application range central to choosing it.
The package pairs two 2-inch aluminum blocks with two extended U-bolts, so buyers get the listed core parts for the rear lift together. FLYCLE specifies Silverado 1500 and Sierra 1500 fitment from 1999 through 2024. For models after 2007, the original spacer is included and must be removed before installation; accounting for that step matters when planning the work. The stated 2-inch-only lift also makes the result clear for shoppers avoiding a larger rear rise.
- 2-inch rear lift height is explicitly stated
- Aluminum blocks
- Includes two extended U-bolts
- Fits listed 1999–2024 Silverado 1500 and Sierra 1500 models
- Provides only a 2-inch lift, with no taller option listed.
Skip it if you need a lift taller than 2 inches; HHCSOP’s 3-inch Silverado/Sierra kit offers a higher listed lift.
Choose this FLYCLE kit if your Silverado 1500 or Sierra 1500 falls within the stated years and a 2-inch rear lift suits your goal. Later models require removal of the included original spacer before installation.
Full product details
| Brand | FLYCLE |
|---|---|
| Included Components | Comes with housing |
| Manufacturer | FLYCLE |
| Part Number | FY35609 |
| Manufacturer Warranty Description | 2 year |
| Material | Aluminum |
| Model Number | automotive-suspension-lift-kits |
Listed on Amazon as: 2 inch Rear Lift Blocks for Chevy Silverado 1500 Sierra 1500, 2" Rear Leveling Kit Extended Square U-Bolts Compatible with 1999-2024 Silverado 1500 Sierra 1500
View on Amazon
#9
9. Autsurles Dodge Ram 2-Inch Kit
- Material: Aluminum
- Material Type: Aluminum
Best for: Dodge Ram steel-block design.
Why it ranks #9: Offers a 2-inch option for specified Ram 1500, 2500, and 3500 applications, with fitment exclusions for Mega Cab and overload-spring configurations.
A cross-gusset plate locked block with a larger contact area distinguishes Autsurles’ 2-inch rear kit for selected Dodge Ram 1500, 2500, and 3500 applications. Its stated design focuses on support, while the model-year and spring restrictions make careful vehicle matching especially important.
The 2-inch kit pairs CNC-machined blocks with extended round 9/16 U-bolts, giving buyers a specified hardware style for the listed Ram applications. Autsurles describes a cross-gusset plate locked design and larger contact area, features intended to provide stronger support than a one-piece design. The black powder-coated surface is stated to resist rust. Fitment excludes Mega Cab Ram 1500 models and overload-spring applications among the listed 2500 and 3500 models.
- 2-inch rear lift
- Cross-gusset plate locked block design
- Larger contact area than a one-piece design
- Black powder-coated surface for rust resistance
- Does not fit Mega Cab Ram 1500 models or listed overload-spring applications.
Skip it if you have a Mega Cab Ram 1500 or an excluded overload-spring setup; FLYCLE’s Silverado/Sierra kit is for different truck applications.
This Autsurles kit fits buyers seeking a 2-inch rear lift for the specified Ram years and configurations. Check cab style, overload springs, and the 2010 Ram 2500 rear-wheel-drive-only restriction before selecting it.
Full product details
| Brand | Autsurles |
|---|---|
| Included Components | Suspension Lift Kits |
| Manufacturer | Autsurles |
| Part Number | XALLK004FK |
| Manufacturer Warranty Description | 1 year |
| Material | Aluminum |
| Model Number | XALLK004FK |
Listed on Amazon as: 2" Rear Blocks Lift Leveling kit for Dodge Ram 1500 2500 3500 2002-2010 2WD 4WD, 2in Rear Leveling Kits with 9/16 Extended Round U-Bolts
View on Amazon
#10
10. ReadyLift Super Duty 4-Inch Kit
- Material: Cast Iron
- Material Type: Cast Iron
Best for: Ford Super Duty two-piece driveshaft.
Why it ranks #10: Provides a 4-inch OEM-style cast iron kit for listed Ford Super Duty trucks with a two-piece driveshaft, including a carrier bearing spacer.
A carrier bearing spacer makes ReadyLift’s 4-inch rear block kit specifically relevant to 1999–2010 Ford Super Duty trucks with a two-piece driveshaft. Its OEM-style cast-iron blocks include bump-stop landing pads, tying the lift application to factory-style components and a defined driveshaft configuration.
ReadyLift supplies a 4-inch block kit with OEM-style cast-iron construction, bump-stop landing pads, and longer U-bolts. The included carrier bearing spacer is specified for use with trucks that have a two-piece driveshaft, so driveshaft configuration is central to selecting this kit. The stated application is 1999–2010 F-250, F-350, and F-450 Super Duty 2WD/4WD trucks. Its model-specific scope helps narrow the intended fit rather than suggesting universal truck compatibility.
- 4-inch rear block kit
- OEM-style cast-iron construction
- Bump-stop landing pads
- Includes carrier bearing spacer for two-piece driveshaft applications
- Specified for trucks with a two-piece driveshaft.
Skip it if you have a one-piece driveshaft; the carrier bearing spacer is specified for two-piece driveshaft trucks, while KSP’s F-150 kit targets a different application.
This ReadyLift kit suits owners of 1999–2010 F-250, F-350, or F-450 Super Duty trucks seeking a 4-inch rear block. Its stated application requires a two-piece driveshaft, so verify that configuration.
Full product details
| Brand | Readylift |
|---|---|
| Included Components | Item |
| Item Weight | 18 pounds |
| Manufacturer | ReadyLift |
| Part Number | 66-2294 |
| Material | Cast Iron |
| Model Number | 66-2294 |
Listed on Amazon as: ReadyLift 66-2294 4'' Rear Block Kit (For F250/F350/F450 Ford)
View on AmazonCheck stock blocks before choosing lift height
A kit’s block thickness does not always equal the extra rear lift, so check whether your truck already has a factory block. The KSP F-150 listing makes this explicit: its 3-inch kit adds 1 inch on certain 4WD applications with a 2-inch stock block, 1.5 inches where the stock block is 1.5 inches, and 3 inches on 2WD applications with no stock block. That difference can make two buyers using the same kit end up with different changes in rear height.
The FLYCLE listing also warns that models after a certain point include an original spacer that must be removed before installing its 2-inch product. Confirm the factory setup and the kit’s instructions for your exact configuration instead of assuming the advertised block height is the net lift.
A mismatch can leave the truck sitting differently than expected.
How to Choose a Rear Block Lift Kit
Vehicle fitment and exclusions
Look first for an exact match to your truck, drivetrain, cab, and rear suspension configuration. The listings range from specific Silverado and Sierra 1500 applications to Toyota Tacoma and Tundra, F-150, Ram, and Ford Super Duty kits. Some have important exclusions: the HHCSOP Tacoma kit does not fit 5-lug Tacoma models, the Autsurles Ram kit excludes Mega Cab models and certain overload-spring setups, and the ReadyLift kit is specified for trucks with a two-piece driveshaft.
Choose the most narrowly matched listing when your configuration has a stated restriction; broader model coverage does not remove the need to verify the details for your vehicle.
Lift height and existing rear blocks
Choose a stated lift height that fits your target stance, while accounting for any factory block already installed. The products offer 2-inch, 3-inch, and 4-inch options, but those figures do not guarantee the same net lift on every truck. The KSP F-150 listing gives examples where a 3-inch kit adds less lift because the vehicle already has a stock block.
FLYCLE’s 2-inch Silverado and Sierra kit also notes that an original spacer on later models must be removed. A 2-inch kit suits buyers seeking the smaller listed lift, while 3-inch and 4-inch kits serve buyers seeking more height—provided their vehicle’s starting setup and fitment support that choice.
Block material and included hardware
Compare block construction and confirm the package includes the hardware needed for your installation. These products list aluminum, carbon steel, CNC-machined steel, and cast iron; the ReadyLift Super Duty kit specifically describes OEM-style cast iron construction. Several kits pair blocks with extended U-bolts, while the FLYCLE listing includes two blocks and two U-bolts and other listings specify four extended U-bolts.
The Dynofit options list carbon steel blocks and extended U-bolts, while HHCSOP calls out grade 12.9 U-bolts and a cross-gusset design. Buyers prioritizing a particular material should check the exact listing, and buyers comparing packages should verify the number and type of fasteners.
Which Rear Block Lift Kit Should You Choose?
For a Silverado or Sierra 1500 needing a 3-inch kit, choose the Dynofit Silverado Sierra 3-Inch Kit for its carbon steel blocks and included extended U-bolts; consider the HHCSOP Silverado Sierra 3-Inch Kit if its grade 12.9 hardware and stated fitment match your truck. Toyota owners can compare the Dynofit Tacoma Tundra 3-Inch Kit with the HHCSOP Tacoma Tundra 2-Inch Kit, while checking the 5-lug exclusion. F-150 buyers should review the KSP F-150 3-Inch Kit’s stock-block notes before assuming its net lift.
For a specified Ram application, consider the Autsurles Dodge Ram 2-Inch Kit and verify its exclusions. Ford Super Duty owners with a two-piece driveshaft can assess the ReadyLift Super Duty 4-Inch Kit.
Match the full application details before ordering.
Related Buying Guides
- Best Rated Lift Kits
- Best Lift Kits For Trucks
- Best Ram Lift Kits
- Best Rated Suspension Lift Kits
- Best Chevy Lift Kits
- Best 4Runner Lift Kit
Frequently Asked Questions
How can I tell whether a rear lift block will change my truck’s ride or handling?
A rear block changes rear suspension height, so ride and handling may feel different, but the effect depends on the truck, setup, and other suspension components. Check the kit’s fitment and lift details against your vehicle, and consult a qualified installer if you notice unusual changes after installation.
Should I have a rear block lift kit installed and aligned by a professional?
A professional installation is a sensible choice if you are unsure about vehicle fitment, safe support, or correctly securing the suspension hardware. Ask the installer whether an alignment or other checks are appropriate for your truck and kit; follow the kit instructions and vehicle guidance rather than assuming every application needs the same work.
What should I inspect after installing extended U-bolts on a rear lift kit?
Check that the U-bolts and other hardware are seated correctly, tightened according to the kit instructions, and clear of nearby components. Recheck for movement, unusual noises, or visible contact after driving, and follow any specified reinspection procedure. If anything looks loose or misaligned, stop and have the installation assessed.
How do I confirm a rear block kit fits my truck?
Match the listing to your truck’s year, make, model, drivetrain, and other stated application details before ordering. Pay attention to exclusions, such as a listed lug-pattern restriction, and do not assume similar model names mean compatible fitment. When details are unclear, confirm them with the seller or a qualified installer.
Will the listed block height always equal the truck’s net rear lift?
Not necessarily. Existing blocks, suspension configuration, and the kit’s application notes can affect the resulting height. For example, the F-150 kit’s stock-block notes matter when estimating net lift.
Review the listing carefully and confirm how its stated lift applies to your truck before choosing a kit.
Final Words
Start with exact vehicle fitment, including year, drivetrain, and any exclusions, then compare the stated lift and included hardware. The Dynofit Silverado Sierra 3-Inch Kit is the overall pick when its listed application matches and you want included extended U-bolts. Toyota, F-150, Ram, and Super Duty owners should weigh the specific notes in the listings before deciding.
If fitment or installation requirements remain uncertain, confirm them with a qualified installer before ordering.


