ReadyLIFT 4" Tall Taper Block (1-pc Drive Shaft) for 2017-2026 Ford F-250/F-350/F-450 Super Duty

$189.95
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Prestige Truck customer support

Questions or a custom quote?

Mon to Fri, 9am to 5pm EST

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Rake back where it belongs

A rear block kit raises the back of a leaf-spring truck so it sits right with a trailer or a loaded bed. It is the rear companion to a front leveling kit.

Rake back where it belongs

A rear block kit raises the back of a leaf-spring truck so it sits right with a trailer or a loaded bed. It is the rear companion to a front leveling kit.
Rear Block Kits by ReadyLIFT: Two tall black fabricated tapered rear lift blocks with long square U-bolts and nuts on white.

Ready to tow

Boat, camper or equipment trailer, a truck with the right rear height handles the hitch weight with a better stance.

Frequently Asked Questions

Straight answers on specs, fit and support

Why add rear lift to a leveled truck?

Leveling the front removes the factory rake. A rear block kit adds some of it back, so the truck sits right once a trailer or a heavy load pushes the rear down.

Can I stack these on my factory blocks?

No. ReadyLIFT designs its kits so one block per side does the job, and it notes that stacked blocks may be illegal in some states. Follow the install sheet for your truck.

Does drive shaft type matter?

On some trucks, yes. Several kits are specific to one-piece or two-piece drive shafts or to single rear wheel trucks. Check the title and fitment on this page.

Will I need an alignment after installing it?

Yes, plan on one. ReadyLIFT notes the vehicle may need an alignment after installation, and headlamp aim should be checked at the same visit.

Does it affect driver-assistance cameras and radar?

Changing ride height can shift camera, radar and sonar aim. ReadyLIFT says to check and recalibrate these systems after installation, and some vehicles need dealer tools to do it.

Can I install it myself?

ReadyLIFT recommends a certified mechanic and says to read the instructions fully before starting. The install sheet and ReadyLIFT's estimated install time for this exact kit are on this page.

What our customers say

4.5 · 2 reviews

Rear4”blocks Verified
12/17/2025

4inch rear list is perfect with 2.5 front lift

Had a 2.5 inch lift in the front of my 2021 F-250 Lariat to level it off by truck sat 1/2- 1inch lower in the back on a normal day with out a trailer, probably 1-2 inches lower with a trailer looked kinda stupid with a trailer. This 4 inch lift replaced my factory rear lift “ about 1.5 inches I think “ really nicely my tuck now have a nice rake when not towing and sits level when towing. Handling is factory feeling even with 37s.

PawpawW Verified
07/15/2026

Good blocks

Blocks are good quality, the u bolts are not as strong or as large as the stock ford u bolts. Otherwise, good product so far