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Correct-Length U-Bolts for Block-Lifted F-250 Trucks With Overloads
Vehicles lifted with 4 in. to 5.5 in. rear blocks and equipped with factory contact overload springs need u-bolts long enough to clamp through both the block and the overload spring pack. Tuff Country's 27955 kit is sized specifically for that combination on 1999-2016 Ford F-250 4WD trucks.
Key Features
- Sized for 4 in. to 5.5 in. rear lift blocks with contact overload springs
- Zinc plated for corrosion resistance
- Includes nuts and washers for a complete install
- Designed specifically for the F-250 4WD platform with factory overloads
Fitment
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2016 | Ford | F-250 | |
| 1999-2016 | Ford | F-350 Super Duty | XL |
| 1999-2016 | Ford | F-350 Super Duty | XLT |
| 2004 | Ford | F-250 Super Duty | Harley-Davidson Edition |
| 2004 | Ford | F-250 Super Duty | King Ranch |
| 1999-2004 | Ford | F-250 Super Duty | Lariat |
| 1999-2004 | Ford | F-250 Super Duty | XL |
| 1999-2004 | Ford | F-250 Super Duty | XLT |
| 2009-2010 | Ford | F-350 Super Duty | Cabela's |
| 2008-2009 | Ford | F-350 Super Duty | FX4 |
| 2004-2010 | Ford | F-350 Super Duty | Harley-Davidson Edition |
| 2003-2016 | Ford | F-350 Super Duty | King Ranch |
| 1999-2016 | Ford | F-350 Super Duty | Lariat |
| 2013-2016 | Ford | F-350 Super Duty | Platinum |
Specifications
| Detail | Value |
|---|---|
| Manufacturer part number | 27955 |
| Use case | 4 in. to 5.5 in. rear blocks with contact overloads |
| Finish | Zinc plated |
| Includes | U-bolts, nuts, and washers |
What's Included
- 4 u-bolts
- Nuts and washers
About Tuff Country
Tuff Country EZ-Ride Suspension has manufactured American-made lift kits, leveling kits, traction bars, and suspension hardware for trucks and SUVs since the 1970s. Tuff Country components are engineered as bolt-on or direct-fit upgrades that work with the factory suspension geometry, and most kits carry a limited lifetime warranty on original components.
FAQ
Do I need this specific kit if my truck has contact overloads?Yes, trucks with factory contact overload springs need a longer u-bolt than a standard block kit provides, and this part number is sized for that combination.
What block height range is this kit designed for?4 in. to 5.5 in. rear lift blocks.
Are these u-bolts sold with the lift blocks?No, this is the u-bolt kit only, blocks are sold separately or included in a complete block and u-bolt kit.
What finish do these u-bolts have?Zinc plating for corrosion resistance.
How many u-bolts are included?4, enough for both sides of the rear axle.
Will these fit a truck without contact overloads?This part number is specifically sized for the taller stack height created by contact overload springs, a standard kit is used without overloads.
Do these u-bolts fit the front axle?No, this kit is designed for the rear axle only.
Is this kit made in the USA?Yes, Tuff Country manufactures its u-bolt kits domestically.
Installation Instructions
- Support the vehicle and remove the rear wheels.
- Remove the factory u-bolts from the axle and spring perch.
- Install the appropriate 4 in. to 5.5 in. lift block between the axle and the leaf spring/overload pack.
- Install the new extended u-bolts over the block and through the perch.
- Thread on the new nuts and torque to the vehicle manufacturer specification.
Prop 65 Warning
WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
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