Heavy Duty Block and U-Bolt Kit | Suspension Maxx | 2 Inch | Rear | Silverado, Sierra

SKU SMX-156020

Suspension Maxx Heavy Duty Block and U-Bolt kit SMX-156020 for the 2WD/4WD Chevy Silverado and GMC Sierra 2500-3500 with 3 inch wide rear leaf springs increases rear suspension height by 2 inches. Can also be used to level vehicles that carry heavy loads.

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$169.99

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Product Specifications

Rear Lift Height:2"
Lift Type:Block

1 In Stock

Product Specs for SuspensionMaxx SMX-156020

Rear Lift Height:2"
Lift Type:Block
MPN: SMX-156020

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SuspensionMaxx SMX-156020 Details

Lift Block Kit for Chevrolet Silverado and Sierra 2500HD / 3500HD

The SuspensionMAXX SMX-156020 Heavy Duty Block and U-Bolt Rear Leaf Spring Leveling Kit increases rear suspension height by 2 inches. Ideal for increasing ground clearance or fitting larger wheels and tires. The Super Heavy Duty U-Bolts are larger than stock and measure 3/4" in diameter. Block and U-Bolt kits can also be used to level vehicles that carry heavy loads.

Lift Amount: 2 Inches

Michigan Truck Spring - SuspensionMAXX

Rear Leaf Spring Lift Block Kits increase rear suspension height by 1 to 2 inches depending on the kit you purchase for your vehicle. Lift Block Kit for 2011-2016 Chevrolet 2500HD / 3500HD

Vehicle Application Guide for SuspensionMaxx SMX-156020

The SMX-156020 Heavy Duty Block and U-Bolt Kit | Suspension Maxx | 2 Inch | Rear | Silverado, Sierra is engineered to work with specific vehicles displayed below. Can't find your vehicle, or need assistance, please give us a call at 1-800-358-4751 or 1-989-755-0561. Browse the category Lift Block Kits to view all vehicle makes and models.

Chevrolet
GMC

Year	Make	Model	Vehicle Option	Installation Notes
2011	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2011	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2011	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2011	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2012	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2012	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2012	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2012	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2013	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2013	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2013	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2013	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2014	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2014	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2014	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2014	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2015	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2015	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2015	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2015	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2016	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2016	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2016	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2016	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2017	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2017	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2017	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2017	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2018	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2018	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2018	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2018	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2019	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2019	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2019	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2019	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2020	Chevrolet	Silverado 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2020	Chevrolet	Silverado 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.
2020	GMC	Sierra 3500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and No Top Mount overload.
2020	GMC	Sierra 2500 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	Fits models with 3" wide Leaf Springs and 8-Bolt wheel with 16mm diameter stock U-bolts.

Customer Q&A - SuspensionMaxx SMX-156020

Ask A Question

I have a 1015 Silverado 2500HD 4X4 Duramax. Does the block kit require installing new shocks or will the stock shocks work? Please advise. Thank you

Asked December 9, 2016

John

As a general rule you can lift a truck up to 2 inches and still use the stock shocks. It is best practice over 2 inches to run a shock that is designed for the extra height so you do not risk over-extension.

SuspensionMaxx

SuspensionMaxx has developed and refined durable products that solve your truck's problems, while being cost effective and maintaining stock vehicle integrity. Over the years the company has grown to be the "Superior Solution" for all your suspension troubles nation-wide. Now with patented designs, patents pending, and products for a wide variety applications from GM, Ford, Dodge, Toyota, Isuzu and others on the way, they are effectively curing the automotive world of its 'sagging nose woes' one truck at a time! Suspension Maxx is dedicated to continuing their crusade of offering you the best possible product at the best possible value to ensure years of added enjoyment from your truck or SUV.

Initially started as a collaboration of ASE Certified Mechanics, who over the years grew accustomed to developing their own specialized tools for job specific uses, SuspensionMAXX is a company with automotive know-how and practical innovation at its core. Suspension Maxx products are proudly made in the USA.

SuspensionMaxx Warranty

Limited Lifetime Structural Warranty

SuspensionMaxx offers a limited lifetime structural warranty on all leveling kits.

1 Year Limited Warranty

SuspensionMaxx offers a 1 year limited warranty on all MaxxLinks sway bar links.

SuspensionMaxx stands behind its products with a limited warranty. This covers defects in material and workmanship.

What the warranty does not cover

Normal wear and tear or any other loss, liability or damage resulting from improper installation, disassembly handling or use of the product. Wearable items including polyurethane and rubber components are not covered. Incidental, consequential or other damages resulting from the disassembly, installation or use of this product.

You can view the full details of SuspensionMaxx warranty here.