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Block Kits & Leaf Springs

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CST 11" U-Bolt Kit CSU-C15-11HD 30342 14.00 CST 11" U-Bolt Kit CSU-C15-11HD
$ 99.18
The CST 11" U-Bolt Kit CSU-C15-11HD for your 2011-2019 GM 2500HD is intended for use with the CST Lift Kit when running a CST Block or CST Leaf Spring. Features: 11" U-Bolt Kit Works With Specific CST Lift Kits 3/4" x 3.25" x 11" Square Note: These u-bolts can likely be used in many other applications. Please refer to bolt measurements provided above to confirm if not using in a CST specific application. For CST application info, please see your specific lift kit for suggested u-bolt sizes.
CST 12" U-Bolt Kit CSU-C15-12HD 30368 8.00 CST 12" U-Bolt Kit CSU-C15-12HD
$ 99.18
The CST 12" U-Bolt Kit CSU-C15-12HD for your 2011-2019 GM 2500HD is intended for use with the CST Lift Kit when running a CST Block or CST Leaf Spring. Features: 12" U-Bolt Kit Works With Specific CST Lift Kits 3/4" x 3.25" x 12" Square Note: These u-bolts can likely be used in many other applications. Please refer to bolt measurements provided above to confirm if not using in a CST specific application. For CST application info, please see your specific lift kit for suggested u-bolt sizes.
CST 13" U-Bolt Kit CSU-C15-13HD 30369 12.00 CST 13" U-Bolt Kit CSU-C15-13HD
$ 94.45
The CST 13" U-Bolt Kit CSU-C15-13HD for your 2011-2019 GM 2500HD is intended for use with the CST Lift Kit when running a CST Block or CST Leaf Spring. Features: 13" U-Bolt Kit Works With Specific CST Lift Kits 3/4" x 3.25" x 13" Square Note: These u-bolts can likely be used in many other applications. Please refer to bolt measurements provided above to confirm if not using in a CST specific application. For CST application info, please see your specific lift kit for suggested u-bolt sizes.
CST 15" U-Bolt Kit CSU-C15-15HD 30370 15.00 CST 15" U-Bolt Kit CSU-C15-15HD
$ 99.18
The CST 15" U-Bolt Kit CSU-C15-15HD for your 2011-2019 GM 2500HD is intended for use with the CST Lift Kit when running a CST Block or CST Leaf Spring. Features: 15" U-Bolt Kit Works With Specific CST Lift Kits 3/4" x 3.25" x 15" Square Note: These u-bolts can likely be used in many other applications. Please refer to bolt measurements provided above to confirm if not using in a CST specific application. For CST application info, please see your specific lift kit for suggested u-bolt sizes.
CST 17" U-Bolt Kit CSU-C15-17HD 30371 18.00 CST 17" U-Bolt Kit CSU-C15-17HD
$ 99.18
The CST 17" U-Bolt Kit CSU-C15-17HD for your 2011-2019 GM 2500HD is intended for use with the CST Lift Kit when running a CST Block or CST Leaf Spring. Features: 17" U-Bolt Kit Works With Specific CST Lift Kits 3/4" x 3.25" x 17" Square Note: These u-bolts can likely be used in many other applications. Please refer to bolt measurements provided above to confirm if not using in a CST specific application. For CST application info, please see your specific lift kit for suggested u-bolt sizes.
CST 6.5" Lift Rear Leaf Springs CSL-C19-1 30297 250.00 CST 6.5" Lift Rear Leaf Springs CSL-C19-1
$ 1314.73
The CST 6.5" Lift Rear Leaf Springs CSL-C19-1 add height to the rear of your 2011-2019 GM 2500HD. Used with blocks and u-bolt kits for CST 10" kit, or other custom applications. Leaf Springs do not retain OE load rating, not for towing. Features: 6.5" Lift Rear Leaf Springs (Pair) Notes: Not intended for towing. Comfort-ride Leaf Springs do not retain OE load rating. U-bolts and blocks required for 8"-10" kit (sold separately). Rear carrier shim may be required on trucks with two-piece rear drive shaft. Truck Freight Item: Allow 1-2 Weeks for delivery. Truck freight charges apply.
Daystar KG09124 2" Rear Block Kit 18965 18.00 Daystar KG09124 2" Rear Block Kit
$ 99.99
Daystar was the first to enter the Leveling Kit market in 1995. Though there have been many companies that have entered the market since, Daystar's Leveling Kits offer many advantages that the others can not claim: Lifetime Warranty - All of Daystar's Leveling Kits are backed by a Lifetime Warranty. In the unlikely event you experience a problem with a Daystar product, we'll take care of it. Made in the U.S.A. - All of our leveling kits are manufactured at our plant located in Phoenix, Arizona. In-house manufacturing ensures a level of quality control that no one else can match....and we have the ISO9001 certification to prove it. Daystar Leveling Kits work within the factory suspension design, meaning that we work within the factory's design parameters to achieve an increase in ride height that levels the stance of the vehicle. Because we work within the factory's design, there are not a bunch additional modifications involved. Features: Lifts Vehicles Without Sacrificing Ride Quality or Load-Carrying Capacity Limited Lifetime Warranty Includes Rear Lift Only
ReadyLift 26-3204 4" Rear Block Kit 26209 32.00 ReadyLift 26-3204 4" Rear Block Kit
$ 166.96
Fine tune the rear height of your 2011-2019 GM 2500HD/3500HD with the ReadyLift 26-3204 4" Rear Block Kit. Including two (2) Rear Blocks, four (4) E-Coated U-Bolts, eight (8) Nuts and Washers, this block kit will safely lift the rear of your truck. Based on an OEM design, the 4" Rear Block Kit is made from cast iron just like the factory block. This ensures maximum strength and reliability. Use these blocks to put a slight rake back in your truck for hauling or towing. Features:4" Rear Lift OEM Style Design Durable Cast-Iron Construction Application Notes: Longer shocks required. Fits Single Rear Wheel (SRW) trucks only.
ReadyLift 26-3205 5" Rear Block Kit 26208 35.00 ReadyLift 26-3205 5" Rear Block Kit
$ 166.96
Fine tune the rear height of your 2011-2019 GM 2500HD/3500HD with the ReadyLift 26-3204 4" Rear Block Kit. Including two (2) Rear Blocks, four (4) E-Coated U-Bolts, eight (8) Nuts and Washers, this block kit will safely lift the rear of your truck. Based on an OEM design, the 4" Rear Block Kit is made from cast iron just like the factory block. This ensures maximum strength and reliability. Use these blocks to put a slight rake back in your truck for hauling or towing. Features:5" Rear Lift OEM Style Design Durable Cast-Iron Construction Application Notes: Longer shocks required. Fits Single Rear Wheel (SRW) trucks only.
ReadyLift 66-3111 1" Rear Block Kit 12256 20.00 ReadyLift 66-3111 1" Rear Block Kit
$ 149.95
The ReadyLift 66-3111 Rear Block Kit will safely add 1" of lift to your 2011-2019 GM 2500HD/3500HD SRW Pickup. This will add a slight rake back into your truck for hauling or towing. The ReadyLift Block is based on OEM designs and made from heavy-duty cast iron just like the factory blocks. This ensures maximum strength and long-term reliability. Fits Single Rear Wheel (SRW) trucks only. Features: 1" Rear Lift OEM Style Design Built-In Locator Pin Durable Cast-Iron Construction Works Great W/ Torsion Key Leveling Kit
ReadyLift 66-3112 2" Rear Block Kit 20089 20.00 ReadyLift 66-3112 2" Rear Block Kit
$ 149.95
The ReadyLift 66-3112 Rear Block Kit will safely add 2" of lift to your 2011-2019 GM 2500HD/3500HD SRW Pickup. This will add a slight rake back into your truck for hauling or towing. The ReadyLift Block is based on OEM designs and made from heavy-duty cast iron just like the factory blocks. This ensures maximum strength and long-term reliability. Features:2" Rear Lift OEM Style Design Built-In Locator Pin Durable Cast-Iron ConstructionWorks Great W/ Torsion Key Leveling Kit Note: Fits Single Rear Wheel (SRW) trucks only. Not for use on trucks with camper package that are equipped with TOP overload springs
ReadyLift 66-3121 1" Rear Block Kit 20098 20.00 ReadyLift 66-3121 1" Rear Block Kit
$ 169.95
The ReadyLift 66-3121 Rear Block Kit will safely add 1" of lift to your 2011-2019 GM 2500HD/3500HD Pickup. This will add a slight rake back into your truck for hauling or towing. The ReadyLift Block is based on OEM designs and made from heavy-duty cast iron just like the factory blocks. This ensures maximum strength and long-term reliability. Features: 1" Rear Lift OEM Style Design Built-In Locator Pin Durable Cast-Iron Construction Works Great W/ Torsion Key Leveling Kit Application Notes: For use only on Single Rear Wheel (SRW) 2500HD trucks that have factory trailer package rear springs. Fits 3500HD Dually
ReadyLift 66-3122 2" Rear Block Kit 20095 20.00 ReadyLift 66-3122 2" Rear Block Kit
$ 169.95
The ReadyLift 66-3122 Rear Block Kit will safely add 2" of lift to your 2011-2019 GM 2500HD/3500HD SRW Pickup. This will add a slight rake back into your truck for hauling or towing. The ReadyLift Block is based on OEM designs and made from heavy-duty cast iron just like the factory blocks. This ensures maximum strength and long-term reliability. Features:2" Rear Lift OEM Style Design Built-In Locator Pin Durable Cast-Iron ConstructionWorks Great W/ Torsion Key Leveling Kit Application Notes: For use only on Single Rear Wheel (SRW) 2500HD trucks that have factory trailer package rear springs. Fits 3500HD Dually
Tuff Country 1" Block & U-Bolt Kit 97090 16736 20.00 Tuff Country 1" Block & U-Bolt Kit 97090
$ 113.65
The Tuff Country 1" Block and U-Bolt Kit 97090 gives you the components needed to raise the rear of your 2011-2018 GM 2500HD 4WD | 2011-2019 GM 3500HD 4WD pickup. Installation is done by inserting the cast lift blocks between the factory rear leaf springs and axle. Extended zinc plated rear u-bolts designed specifically for the truck are used to replace the factory u-bolts. Features: 1" Block LiftCast Lift Blocks Zinc Plated U-Bolts