CJC Built 2017+ Ford Super Duty 3.25" Rear Block Kit

CJC3.5FORDBLOCKS

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Regular price $299.99 Save $-299.99

-941 in stock

This 3.25" tall "Tremor" block kit uses genuine Ford rear blocks from Tremor package trucks, along with our USA made, Zinc plated U bolts and hardware. This kit incudes everything you need to swap the rear of your 2017+ Ford F-250 or F-350 to  the same height as a Ford Tremor while maintaining the stock leaf packs. These blocks are the perfect compliment to a 2.5" or 3.5" leveling kit if you find that the stock blocks are too low. 

Starting in 2020, Ford lowered all non-Tremor trucks. To make things more confusing, Ford also specs different block heights depending on the trim of the truck, which means that sometimes a leveling kit causes the truck to sit rear low. These blocks are the answer. 

Please note that these blocks are compatible with standard airbag kits that mount off the block "tang" but these blocks are NOT compatible with Carli long travel airbags or with Carli leaf packs. 

Customer Reviews

Based on 23 reviews
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JASON DARR
OEM ford 3.25" Tremor Blocks

This is a High quality OEM Ford block kit. The install took around 45 minutes on each side on a 2025 Ford F350 SRW LWB platinum with the smart scale and hitch. No calibration needed since the scale sensor measures from the frame to the leaf springs. My truck sits exactly 1/4'' higher in the rear than the front after installing a 2.5" level kit on the front. Highly recommend this block and bolt kit.

J
James Clark
Easy Swap 3.25 Tremor Blocks

Product as described. Easy install. Got rid of the sagging rear after the 2.5” level.

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THOMAS LONGO
No more saggy truck

I had a Carli Commuter 3.5 inch lift kit installed on my 2023 super duty right after delivery. A few months ago, I noticed it looked a little saggy in the rear end. My driveway has a good slope to it so I never really noticed it before. Ordered the blocks and installed them. Super easy and super satisfied with the result in aesthetics and handling. Seems less sloppy in the front end now and looks great. I did have to trim off an inch of the u-bolts as my deepest socket wasn’t deep enough.

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Derek Houser
2024 F350

The item arrived well packaged. Everything was included to complete the install and the install went smoothly and quickly. Very impressed.

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Jordan Wansley
Perfect Height for 2024 SRW F350

Perfect ride height paired with the 3.5” Carli Suspension lift. This gives me about 3/4” of rake which I think is a perfect stance for this vehicle. Very easy installation but does require the u bolts to be cut off about 1-1/2 inches, after installation.