Made in USA – 2011–2026 Chevy Silverado & GMC Sierra 2500HD/3500HD 4", 5", 6", or 8" Rear Lift Blocks – Compound Taper Anti-Wrap Design WITH Integrated Bumpstop
If your vehicle has overload springs, call us for proper U-bolt sizing!
Level Up Your Heavy-Duty Hauler with Premium American-Made Lift Blocks – Now with Integrated Bumpstops
Transform the stance, towing stability, and off-road performance of your 2011–2026 Chevy Silverado 2500HD/3500HD or GMC Sierra 2500HD/3500HD with Apoc Industries Compound Taper Anti-Wrap Rear Lift Blocks featuring Integrated Bumpstops. Proudly designed, tested, and manufactured in East Tennessee for truck owners who demand the best.
🚀 Why Apoc Compound Taper Lift Blocks Are the Smart Upgrade
- Exclusive Compound Taper Technology — Top taper matches factory leaf spring angle for perfect seating. Bottom taper maintains proper pinion angle at your chosen lift height — keeping wheels centered and protecting your drivetrain.
- Advanced Anti-Wrap Design + Integrated Bumpstop — Wider footprint reduces axle wrap, spring twist, and wheel hop. New integrated bumpstop provides extra bottoming protection and controlled suspension travel for a smoother, more confident ride on and off the road.
- Heavy-Duty American Steel Construction — Precision robotic welds deliver maximum strength, zero flex, and a clean, professional look.
- True Lift Heights — Available in exact 4", 5", 6", and 8" options — no guesswork.
- Optional Extended U-Bolts — Main and anti-wrap sets sized for 3.5" axle tubes.
- 100% Made in USA — Built by East Tennessee truck enthusiasts who understand real-world HD demands.
Perfect For: Daily drivers, weekend trail runners, heavy towers, and serious off-road builds. Combine with Apoc adjustable control arms or full suspension kits for a perfectly leveled or lifted stance that performs as good as it looks.
📋 Fitment & Important Notes Fits: 2011–2026 Chevrolet Silverado 2500HD / 3500HD 2011–2026 GMC Sierra 2500HD / 3500HD
⚠️ Key Fitment Notes
- Upgrade U-bolts when increasing block height — factory bolts may not be long enough.
- Re-torque all U-bolts after the first 100 miles.
- For 6"+ lifts, we strongly recommend adding ladder bars for maximum stability and driveline protection.
- Direct bolt-on install. No cutting or welding required.
⏱️ Installation Bolt-on design. Typical install time: 1–2 hours with basic hand tools. Detailed instructions included.
What's Included
- Pair of precision-machined heavy-duty steel lift blocks
- Integrated bumpstops for enhanced bottoming protection
- Installation hardware and instructions
- Optional extended main + anti-wrap U-bolts (select at checkout)
Ready to give your truck the upgraded stance and protection it deserves? These aren’t just lift blocks — they’re a complete drivetrain-saving, ride-improving solution built tougher, right here in the USA.
Add to cart now and join the growing list of satisfied Apoc owners running these premium blocks!
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.
First with Compound Tapers. Built to Stay Centered
Built Better, Not Cheaper. Period
Compound Taper Technology
Apoc Anti-Wrap Lift Blocks are the first ever with exclusive compound tapers. The top taper matches your factory OEM leaf spring angle for perfect seating, while the bottom taper maintains proper pinion angle at your chosen lift height.
The Problem with Standard Blocks
Most lift blocks only correct pinion angle and ignore the leaf spring angle. The taller the block, the further back they push your axle — throwing wheels off-center in the fenders and over-extending your driveshaft, which can damage your transfer case.
Benefits of Apoc Anti-Wrap Lift Blocks
Our heavier-duty steel construction with precision robotic welds delivers zero flex and maximum strength. The anti-wrap geometry keeps your axle centered, protects your drivetrain, and provides a stable ride — perfect for serious off-roaders, daily drivers, and tow vehicles.
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.
100%
American-Made. No Compromises
Order With Confidence — But Verify Your U-Bolts
Most Apoc Industries vehicle-specific lift block kits already include U-bolts matched to your application. However, trucks with added leaf springs or overload packs are not accounted for in the standard kit. Please verify your current U-bolt lengths before installing — if anything doesn't match, our customer service team can get you the correct U-bolts and eliminate any issues before you're under the truck.
PRE-INSTALL CHECKLIST: CHOOSING THE RIGHT BLOCK HEIGHT
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1Measure fender well gap — front and rear with the truck on level ground, measure the gap between the top of the tire and the fender well at the front axle and again at the rear axle.
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2Calculate the difference more gap in front than rear (e.g. 2" more up front): you need to ADD that difference in the rear — select a block that matches the gap difference. More gap in rear than front (e.g. 2" more in back): you need a block SHORTER than your current one by that difference.
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3Measure your current rear block height, Measure from the bottom of the existing block to the top where it contacts the leaf spring. Take the measurement at the center/middle of the block — not the front or rear edge. Some blocks are tapered, so the front edge may be shorter than the rear edge; the center gives you the true height.
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4Calculate your target block height Current block height ± the fender gap difference = your target lift block height. Use this number to select your Size variant.
U-BOLT SELECTOR GUIDE
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Identify your bend style — There are three bend types: Round bend (nuts sit on top of the leaf spring pack. Inside width typically matches the axle tube diameter.), Square bend (wraps over the top of the leaf spring pack; nuts tighten from below the axle. Inside width on square bends is typically matched to the leaf spring width, not the axle housing.), Semi-round bend (primarily used on Ford Super Duty applications)
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Measure inside width — Measure the inside dimension between the two long legs of your current U-bolt (leg to leg, inside edge to inside edge). This must match your axle housing width.
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Measure U-bolt length — Measure the total length of the long legs on your current U-bolts. When adding a taller block, you'll need longer U-bolts to maintain proper thread engagement through the axle plate and nuts.
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Select your U-bolt option — Use your bend style, inside width, and leg length to select the correct U-bolt variant. If your current U-bolts are borderline on length after adding the new block height, size up.
Learn how to get the most out of your lift with expert install guides and tech tips from Apoc Industries.
Suspension Tech & Guides
Why Apoc’s New Compound Taper Anti-Wrap Lift Blocks Are a Game-Changer (Compared to Standard Blocks)
If you’re lifting your truck — whether for better stance, towing capability, off-roading, or just because it looks badass — the rear suspension is critical. Lift blocks are one of the most popu...