1999-2006 Chevrolet Silverado / GMC Sierra 1500 4, 6, 8 Inch Lift Blocks
1999–2006 Silverado / Sierra 1500 Rear Lift Blocks – 4", 6", 8"
Elevate your truck’s stance with our precision-engineered rear lift blocks for the 1999–2006 Chevy Silverado 1500 and GMC Sierra 1500. Designed to work with leaf spring suspension setups, these blocks offer a straightforward solution for achieving a 4", 6", or 8" rear lift—ideal for reverse leveling or matching front lift systems.
Key Features
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✅ Available Heights: Choose from 4", 6", or 8" lift blocks
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✅ Application-Specific Fitment: Blocks designed for 1999–2006 GM 1500 trucks (2WD/4WD)
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✅ American Made: Blocks are proudly manufactured in the USA
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✅ True-to-Size Lift Heights: Blocks provide actual lift height as advertised
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✅ Heavy-Duty Steel Construction: Blocks built for strength in off-road and daily use
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✅ Tapered Design (Where Applicable): Blocks help correct pinion angle to reduce driveline vibration
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✅ Black Powder Coat Finish: Blocks feature a corrosion-resistant and visually clean coating
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✅ Precision Machined Surfaces: Ensures blocks seat properly for optimal load distribution
Installation
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Bolt-on installation: No welding or cutting required
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Optional Hardware Kits: Matching U-bolts available separately or as complete kits
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Estimated Install Time: 1–2 hours with standard tools
⚠️ Note: These blocks are not intended for vehicles with factory lift blocks. Verify block stack height and u-bolt length before installation.
Fitment
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1999–2006 Chevrolet Silverado 1500 (All cabs and beds)
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1999–2006 GMC Sierra 1500 (All cabs and beds)
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Fits both 2WD and 4WD models with rear leaf springs
Tech Specs
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Material: Solid steel
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Finish: Black powder coat
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Tapered: Yes (varies by height)
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Block Width: 2.5"
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Center Pin Size: 9/16"
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Origin: Made in the USA
Why Upgrade?
Whether correcting rear squat, reverse leveling, or dialing in stance with a front lift kit, these blocks provide a reliable, budget-friendly lift solution that maintains factory ride quality and strength—built right here in the USA.
Built Right. Backed. Right
Our crew’s on call Monday–Friday, 9–5 EST. Hit us up at 865-983-5004 — real support, done right.
Built for Strength. Designed to Fit.
Vehicle-Specific Fit
Apoc lift blocks are vehicle-specific and engineered to match your truck’s factory leaf spring setup. The alignment hole and center pin locations are precisely positioned to match OEM specs, ensuring a secure, direct fit with no modifications required.
Vibration-Reducing Taper
Tapered lift blocks correct pinion angle, which helps maintain proper driveline geometry on lifted trucks. This reduces or eliminates driveline vibrations and minimizes wear on u-joints and differential components—especially important when adding rear lift height.
Benifts of anti-wrap lift blocks
Standard blocks provide basic lift, while anti-wrap blocks feature a wider footprint and additional bracing to reduce axle wrap and wheel hop—especially important for lifted trucks with big tires or high torque output.
FAQ'S
Lift Blocks
Here are some of the most common questions we receive about lift blocks, installation, and related components. Our goal is to help you make the best decision for your build with clear, practical information.
A: Yes. Apoc lift blocks are true to size—the height listed is the actual block height, providing that exact amount of rear lift when installed. For example, a 3" block adds 3" of lift over your current leaf spring height.
A: Apoc lift blocks are vehicle-specific and engineered to match your truck’s factory leaf spring setup. The alignment hole and center pin locations are precisely positioned to match OEM specs, ensuring a secure, direct fit with no modifications required.
The main U-bolts are required to secure the axle and block assembly to your leaf springs. You do not have to purchase them from us if your existing U-bolts are long enough. However, if you are changing the size of your lift block, you will need longer U-bolts. Simply measure the difference in height between your current block and the new block — your new U-bolts will need to be that much longer than your current ones.
Anti-wrap U-bolts are optional. They are designed to secure the wider footprint of the block more firmly to the leaf spring, helping to reduce axle wrap, spring twist, and wheel hop. The taller the block, the more beneficial anti-wrap U-bolts become. For block heights over 6 inches, we recommend also installing ladder bars for added stability and to prevent driveline issues.
A: Standard blocks provide basic lift, while anti-wrap blocks feature a wider footprint and additional bracing to reduce axle wrap and wheel hop—especially important for lifted trucks with big tires or high torque output.
A: No, stacking lift blocks is not recommended and can be dangerous. It compromises stability, increases the risk of axle shift, and can cause premature wear or failure of suspension components. Always use a single, properly sized Apoc lift block for safe, reliable performance.