ReadyLIFT 4 Inch Rear Block Kit - 2014-2018 Chevy GMC Silverado Sierra 1500 (26-3104)

This ReadyLIFT 4 inch rear block kit is for the 2014-2018 Chevy Silverado and GMC Sierra 1500, 2WD and 4WD. The cast iron blocks are OEM-style with built-in anti-rotation ears and replace the factory rear block for about 3 inches of rear lift. The kit adds longer U-bolts and hardware and removes the need to stack blocks.

Key features

• OEM-style cast iron blocks, not lightweight extrusions
• Built-in anti-rotation ears
• New, longer U-bolts included
• Eliminates stacked blocks, which may be illegal in some states
• Lifetime warranty

What's included

• 2 rear blocks
• 4 E-coated U-bolts
• 8 nuts and washers

Fitment and compatibility

• Fits 2014-2018 Chevy Silverado 1500 and GMC Sierra 1500, 2WD and 4WD
• 6-lug trucks, classic and new body style
• ReadyLIFT recommends the 67-3809 rear shock extension kit or longer shocks
• Designed to work with a ReadyLIFT leveling kit; ReadyLIFT lists the 66-3085 2.25 inch front leveling kit (GM 6-lug) as a match

Specifications

• Brand: ReadyLIFT
• Part number: 26-3104
• Block height: 4 inch
• Rear lift: 3 inch
• Material: Cast iron
• Warranty: ReadyLIFT Lifetime Warranty
• Estimated install time: 1.8 hours, plus or minus 0.5 hours

Installation

Allow about 1.8 hours, plus or minus 0.5, not counting alignment or wheel and tire assembly. ReadyLIFT recommends a certified mechanic. Alignment may be required, check your headlamp aim afterward, and ADAS systems may need recalibration.

Modifying your suspension can change handling and rollover risk (SAE J2492). ReadyLIFT's page also carries a California Proposition 65 warning that names DEHP.