BDS 4-Inch Lift Kit | FOX 2.5 Performance Elite 3-Inch Coil-Overs | FOX PE Rear Shocks | Chevy Avalanche / Suburban / Tahoe / GMC Yukon 1500 4WD 2007–2014 | SKU: 900PSS

Verified Fitment

Component Specifications

What Is and Is NOT Included

Critical Compatibility

Avalanche owners: confirm your model year is 2013 or earlier before ordering. The Avalanche was discontinued after 2013 — there is no 2014 Avalanche. Contact OFAS at (469) 407-7538 before ordering if you need help confirming your platform year or drivetrain.

GMT900 Full-Size SUV 4-Inch Kit Variant Reference

The only difference between 188PSS and 900PSS is the coil-over body diameter. Both deliver the same 4 inches of front lift with FOX 2.5 PE damping. Contact OFAS at (469) 407-7538 to confirm which body size is correct for your use case before ordering.

Installation Notes

Skill Level: Advanced. A 4-inch lift on a GMT900 full-size SUV platform requires a qualified suspension shop. These are large, heavy-platform vehicles — proper lifting equipment, correct torque procedures, and suspension shop experience on full-size SUVs are required. Do not attempt DIY installation.

Required Tools:

• Full hydraulic lift rated for full-size SUV 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.

Reservoir Routing: Follow BDS and FOX installation instructions for FOX 2.5 PE reservoir placement. Avoid pinch points and heat sources. Incorrect reservoir routing causes premature shock failure.

Avalanche Year Confirmation: The Avalanche was discontinued after 2013. Confirm your Avalanche is a 2013 or earlier model year before ordering. There is no 2014 Avalanche.

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 full-size SUV platform.

Tire Fitment: At 4 inches of lift on the GMT900 SUV platform, typical fitment runs 33–35-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 900PSS is the maximum-capacity 4-inch FOX 2.5 PE configuration for the GMT900 full-size SUV platform. The 3-inch body coil-over carries more oil volume than the 2-inch body in SKU 188PSS — which translates directly to greater heat dissipation under sustained load. On a platform this size, under towing weight or sustained off-road use, thermal management is not a minor spec difference. It is the difference between consistent damping performance throughout a long haul and fade under load.

Both 900PSS and 188PSS run FOX 2.5 PE. Both deliver the same 4 inches of front lift. Both include FOX PE rear shocks. The coil-over body diameter is the only variable — and it matters specifically for how you use this truck.

This kit is for you if: You own a 2007–2014 Suburban, Tahoe, or Yukon 1500 4WD — or a 2007–2013 Avalanche 1500 4WD — and you want 4 inches of front lift with FOX 2.5 PE 3-inch body coil-overs. You tow regularly, run this vehicle hard off-road, or want the maximum thermal capacity available at this lift height on this platform. The 3-inch body is the correct choice for sustained high-load use.

This kit is not for you if: You want the lower price point of the FOX 2.5 PE 2-inch body — order SKU 188PSS. You want 6 inches of lift instead of 4 — order SKU 178PSS. Your vehicle is 2WD or RWD — this kit does not apply. You have a 2015 or newer Suburban, Tahoe, or Yukon — different platform entirely, contact OFAS for the correct kit. You have a Silverado or Sierra pickup — different platform. Confirm your year, model, and drivetrain before ordering — the kit is non-returnable once installed.

Common Questions

What is the difference between SKU 900PSS and SKU 188PSS?
Both kits fit the 2007–2014 GMT900 full-size SUV platform and deliver 4 inches of front lift with FOX 2.5 Performance Elite damping and FOX PE rear shocks. The only difference is the coil-over body diameter — 900PSS uses a 3-inch body and 188PSS uses a 2-inch body. The 3-inch body carries more oil volume and dissipates heat more effectively under sustained towing or off-road load. If you tow regularly or run this vehicle hard, 900PSS is the correct choice. Call (469) 407-7538 to confirm which fits your use case.

Does this fit the 2014 Chevy Avalanche?
No — and there is no 2014 Avalanche. The Chevy Avalanche was discontinued after the 2013 model year. If your Avalanche is a 2013 or earlier 4WD, this kit applies. Contact OFAS to confirm before ordering.

Does this fit the GMC Yukon XL?
Contact OFAS at (469) 407-7538 before ordering to confirm Yukon XL compatibility. Do not assume compatibility with the standard Yukon 1500 fitment.

Does this fit my 2WD Tahoe or Suburban?
No. SKU 900PSS is 4WD only. Two-wheel drive and rear-wheel drive models are not compatible.

Does this fit the 2015 Suburban or Tahoe?
No. The 2015 Suburban, Tahoe, and Yukon are a different platform generation — this kit does not apply. Contact OFAS at (469) 407-7538 and we will identify the correct kit for your platform year.

Why does the 3-inch body coil-over matter over the 2-inch body?
Oil volume determines how long a shock can maintain consistent damping performance under heat. A larger body diameter holds more oil — which absorbs and dissipates heat more effectively during sustained towing, long off-road runs, or repeated high-load cycles. For daily driving and moderate use, the 2-inch body in 188PSS performs well. For sustained hard use, the 3-inch body in 900PSS is the correct choice.

What size tires fit at 4-inch lift on the GMT900 SUV platform?
Typical fitment runs 33–35-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specifications with your wheel and tire supplier before ordering.

What warranty covers this kit?
BDS suspension components are covered by the BDS No-Fine-Print Warranty. FOX 2.5 Performance Elite 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 model, year, and drivetrain before ordering. Call (469) 407-7538 with any fitment questions before your order is placed.