5-Inch and 6-Inch Rear Block & U-Bolt Kits for 1980–2004 Ford F-250/F-350

Description

Heavy Duty Rear Lift Blocks – 5″ & 6″ Options

Now Available in Powdercoated Black Finish

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Upgrade your rear suspension with our heavy-duty lift blocks, precision machined to match factory dimensions and offer improved strength, driveline angle correction, and lift.

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📏 Lift Height:

• 6″ Block:

  • Replaces factory F-350 4″ block = 2″ of lift on F-350

  • 3″ of lift on F-250 or trucks without a factory block

• 5″ Block:

  • Provides 1″ less lift than the 6″

Note: Lift amount may vary slightly on FX4 and other special packages.

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✅ Applications:

• 1980–2004 Ford F-250 / F-350

• 1980–1996 Ford Bronco / F-150

• Also works on older leaf-sprung Ford trucks (as early as ’78)

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🔧 Features:

• 4° taper for driveline angle correction

• Captured U-bolt design prevents bolt spreading

• Multiple spring pin positions for versatile setup

• Mimics OEM bump stop leg

• 5/8″ center pin

• Fits:

  • 3″ wide springs

  • 3.5″ axle tubes

  • Also compatible with 3.125″ axle tubes found on older models and some Super Dutys

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These blocks are a perfect solution for mild lift adjustments or for correcting stance when swapping springs or axles. Strong, smartly engineered, and easy to install.

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