BDS 6-Inch Lift Kit | FOX 2.0 Performance Series Coil-Overs | 5.5-Inch Rear Block + AAL | Chevy Silverado / GMC Sierra 1500 4WD 2007–2013 | SKU: 176PSS

Verified Fitment

Component Specifications

What Is and Is NOT Included

Critical Compatibility

Drivetrain and platform year confirmation are mandatory before ordering. The 2014 Silverado/Sierra 1500 is the K2 generation — a completely different platform. Do not order this kit for a K2-generation truck. Text (469) 407-7538 before ordering if you need help confirming your drivetrain or platform year.

GMT900 Silverado/Sierra 1500 6-Inch Kit Variant Reference

Text (469) 407-7538 to confirm shock tier and rear system preference before ordering.

Installation Notes

Skill Level: Advanced. A 6-inch coil-over lift with 5.5-inch rear axle block and AAL on the GMT900 platform requires a qualified suspension shop. At 6 inches of lift, both front and rear disassembly are significant — this is not a bolt-on leveling kit. Do not attempt DIY installation.

Required Tools:

• Full hydraulic lift rated for truck weight
• Coil-over compression tool
• Torque wrench
• Full socket and wrench set

Alignment: Full front-end alignment is mandatory after installation. Do not operate the vehicle on public roads before alignment is completed.

Rear Axle Block and AAL Installation: 5.5-inch axle blocks must be installed per BDS specifications. The Add-A-Leaf supplements the factory rear spring pack to support the additional rear lift height — confirm leaf pack assembly sequence per BDS instructions. Confirm U-bolt torque specs and axle centering after installation. Improperly centered axle blocks cause driveline vibration and premature U-joint wear.

Extended Brake Lines: Verify whether extended brake lines are required for your specific configuration at time of installation.

Torque Specs: Follow BDS-specified torque values included in the installation instructions. Do not substitute generic torque values on a lifted platform.

Tire Fitment: At 6 inches of lift on the GMT900 platform, typical fitment runs 35–37-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specifications with your wheel and tire supplier before ordering.

The Obsidian Take

SKU 176PSS is the standard-tier 6-inch system for the 2007–2013 GMT900 Silverado or Sierra 1500 4WD owner who wants a complete front-to-rear 6-inch lift at the FOX 2.0 Performance Series price point. FOX 2.0 coil-overs up front, 5.5-inch axle block with Add-A-Leaf rear, FOX 2.0 rear shocks — a complete system without the FOX 2.5 PE price premium.

The decision between 176PSS and 176PES is the shock tier only. Same platform, same 4WD requirement, same 5.5-inch block and AAL rear system — FOX 2.0 Performance Series here versus FOX 2.5 PE with external reservoir in 176PES. FOX 2.0 handles daily driving, moderate off-road, and light to moderate towing without issue. If you run this truck hard off-road, tow at or near capacity regularly, or want external reservoir thermal management, step up to SKU 176PES. If the FOX 2.0 Performance Series meets your use case, 176PSS delivers the same 6-inch lift geometry at a lower price point.

The decision between 176PSS and 177PES is rear system and shock tier simultaneously. SKU 177PES uses 5.5-inch replacement leaf springs with FOX 2.5 PE piggyback rear shocks and FOX 2.5 PE coil-overs up front. Replacement leaf springs deliver a new spring rate, corrected geometry, and better articulation under towing and hauling loads compared to the block and AAL system. If you tow regularly or want the most complete rear suspension upgrade at 6 inches, 177PES is the stronger long-term investment. If the block and AAL rear meets your use case and the FOX 2.0 tier fits your budget, 176PSS is the correct choice.

This kit is for you if: You own a 2007–2013 Silverado or Sierra 1500 4WD, you want 6 inches of front lift with a 5.5-inch block and AAL rear system, and FOX 2.0 Performance Series front and rear is the correct shock tier for your budget and use case.

This kit is not for you if: Your truck is 2WD — this kit does not apply. You want FOX 2.5 PE damping — order SKU 176PES for the block and AAL rear or SKU 177PES for the replacement leaf spring rear. You have a 2014 or newer Silverado/Sierra — different platform entirely, text OFAS for the correct K2 SKU. You have a 2006 or earlier or an HD model. Confirm your year and drivetrain before ordering — the kit is non-returnable once installed.

Common Questions

What is the difference between SKU 176PSS and SKU 176PES?
Both kits fit the 2007–2013 Silverado/Sierra 1500 4WD with a 5.5-inch block and AAL rear system at 6 inches of front lift. The only difference is the shock tier — 176PSS uses FOX 2.0 Performance Series and 176PES uses FOX 2.5 Performance Elite with external reservoir. If you wheel hard or tow at capacity regularly, order 176PES. Text (469) 407-7538 to confirm which fits your use case.

What is the difference between SKU 176PSS and SKU 177PES?
Two variables: rear system and shock tier. SKU 177PES uses 5.5-inch replacement leaf springs with FOX 2.5 PE piggyback rear shocks and FOX 2.5 PE coil-overs up front. SKU 176PSS uses a 5.5-inch axle block and AAL with FOX 2.0 Performance Series front and rear. If you tow regularly or want a new spring rate at the rear, 177PES is the stronger long-term solution. Text (469) 407-7538 to confirm which rear system and shock tier fits your use case.

What does the Add-A-Leaf do and why is it needed?
The Add-A-Leaf supplements the factory rear spring pack to support the additional rear lift height delivered by the 5.5-inch axle block. Without the AAL, the factory spring pack alone may not adequately support the lifted geometry under load. The AAL must be assembled in the correct sequence per BDS installation instructions — confirm with your installer before the job begins.

Does this fit my 2014 Silverado 1500?
No. The 2014 Silverado/Sierra 1500 is the K2 generation — a different platform entirely. Text (469) 407-7538 and we will identify the correct K2 SKU for your truck.

Does this kit include rear lift?
Yes. SKU 176PSS includes 5.5-inch rear axle blocks, Add-A-Leaf, and FOX 2.0 Performance Series rear shocks. This is a complete front-to-rear system.

What warranty covers this kit?
BDS suspension components are covered by the BDS No-Fine-Print Warranty. FOX 2.0 Performance Series shocks carry a FOX 1-year limited warranty.

Manufacturer Data Disclaimer: Specifications sourced from BDS Suspension product documentation and authorized distributor data. Obsidian Forged Auto Supply is an authorized BDS Suspension dealer. Manufacturer specifications are subject to change without notice.

⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information visit P65Warnings.ca.gov.

⚠️ Non-Returnable Notice: Suspension components are non-returnable once installed. Confirm drivetrain, year, and platform before ordering. Text (469) 407-7538 with any fitment questions before your order is placed.