Supreme Suspensions Part Number 288: A Complete Guide to the 3-Inch Lift Kit

If you’re upgrading your truck or SUV’s suspension, Supreme Suspensions part number 288 is a popular choice for adding 3 inches of front lift. This part is a strut spacer kit designed to level the front end of select vehicles, enhancing ground clearance and allowing for larger tires. Before purchasing or installing, it helps to know exactly what this kit includes, which vehicles it fits, and what to expect during installation. This guide covers the essential details so you can decide if part number 288 is right for your setup.

Overview of Supreme Suspensions Part Number 288

Supreme Suspensions produces a range of suspension lift and leveling components. Part number 288 is a front strut spacer lift kit that delivers 3 inches of lift to the front suspension. It is intended for vehicles with a torsion bar or strut-style front suspension, specifically certain models of Chevrolet, GMC, and Cadillac trucks and SUVs. The kit is designed to level the vehicle by raising the front to match the rear height, eliminating the factory rake. It includes CNC-machined billet aluminum spacers, Grade 8 hardware, and detailed instructions.

What’s Included in the Kit

The 288 kit typically contains:

• 2 front strut spacers (billet aluminum)
• Premium Grade 8 hardware (bolts, nuts, washers)
• Installation instructions
• Limited lifetime warranty from Supreme Suspensions

The spacers are precision-machined from T6 billet aluminum for strength and corrosion resistance. The hardware meets or exceeds OEM standards.

Vehicle Applications for Part Number 288

Part number 288 is not a universal fit; it is designed for a specific range of vehicles. The primary applications include:

• Chevrolet Silverado 1500 (1999-2006)
• GMC Sierra 1500 (1999-2006)
• Chevrolet Avalanche (2002-2006)
• Cadillac Escalade (2002-2006)
• Chevrolet Suburban/Tahoe (2000-2006)
• GMC Yukon/Yukon XL (2000-2006)

Note that the kit is intended for 2-wheel drive and 4-wheel drive models with the correct front suspension. Always confirm your vehicle’s year, make, and model before ordering. Supreme Suspensions provides fitment guides on their website, but double-checking with your vehicle’s VIN is recommended.

Compatible Trim Levels

Most trims of the listed vehicles are compatible as long as the front suspension uses strut assemblies. For example, SS or hybrid models may have different suspension setups and may not fit. Also, vehicles with factory air ride or autoride suspension require additional modification or are not compatible. If your truck has a torsion bar front suspension, this kit will not work because torsion bars use a different lifting method. Always inspect your front strut design before installation.

Key Features and Specifications

Lift Height and Design

The kit provides exactly 3 inches of lift at the front wheel. This creates a level stance when the rear of the vehicle is at stock height. If you have a rear lift block or add-a-leaf, the front may still sit lower, so consider pairing it with a rear lift kit or taller rear blocks for a balanced look.

The spacer mounts between the top of the strut assembly and the strut tower. It effectively pushes the strut downward, increasing the distance between the lower control arm and the chassis. This increases wheel travel downward but does not change the shock valving or spring rate. As a result, ride quality remains close to stock, though some stiffening may be noticed.

Material and Build Quality

Supreme Suspensions uses 6061-T6 billet aluminum for the spacers. This material is lightweight, resistant to rust, and strong enough to handle off-road abuse. The hardware is Grade 8, which is the highest standard for automotive fasteners, offering high tensile strength. The spacers are CNC machined to tight tolerances, ensuring a precise fit without slop.

Compatibility with Larger Tires

After installing part number 288, you can typically fit up to 33-inch tires (depending on wheel offset and trimming). For most 1500 series trucks, 285/70R17 or 33x12.5R20 tires are common upgrades. Always test fit or consult a tire shop for exact clearances.

Installation Guide for Part Number 288

Installing a strut spacer lift is a moderate DIY job if you have basic mechanical skills, a floor jack, jack stands, and basic hand tools (metric sockets, torque wrench). The process takes 2-4 hours on average. Here is a step-by-step outline:

1. Safety First – Park on level ground, chock rear wheels, and disconnect the negative battery terminal. Use jack stands to support the vehicle after lifting.
2. Remove Front Wheels – Loosen lug nuts, jack up the front, place jack stands under the frame, and remove wheels.
3. Support the Lower Control Arm – Place a jack under the lower control arm to compress the coil spring slightly. This relieves tension on the strut.
4. Remove the Strut Assembly – Unbolt the lower strut bolts (2 per side) and the top strut mounting nuts (3 per side). Carefully lower the strut assembly. Avoid overextending the CV axle if your vehicle has independent front suspension.
5. Install the Spacer – Place the Supreme Suspensions spacer on top of the strut mount, aligning the bolt holes. Use the supplied hardware to secure the spacer to the strut mount. Torque to spec (usually 75-90 ft-lbs for top nuts, check instructions).
6. Reinstall Strut Assembly – Lift the strut back into place, aligning the top studs through the spacer and into the strut tower. Tighten lower bolts to spec (around 100-120 ft-lbs). Remove the jack from the control arm.
7. Repeat on Passenger Side – Follow the same procedure.
8. Reattach Wheels and Lower – Mount wheels, torque lug nuts, lower vehicle, and perform a final torque check on all suspension bolts.
9. Alignment – After installation, a front-end alignment is mandatory. The lift will affect caster, camber, and toe. Go to a professional alignment shop. You may need aftermarket camber bushings if alignment cannot be brought to spec.

Important Notes

• Do not attempt to install the spacer by compressing the coil spring yourself; the kit does not require spring removal, so no spring compressor needed.
• Reuse your original strut assembly; the spacer does not replace the strut.
• Check brake lines and ABS wires for adequate slack. If they are tight, re-route or install longer lines (usually not needed for 3 inches).
• After alignment, drive the vehicle for a few miles and re-torque all suspension bolts.

Maintenance Tips for Your Lifted Suspension

Once your Supreme Suspensions 288 kit is installed, keep these maintenance points in mind:

• Regular Inspections – Every oil change, visually inspect the spacers for cracks or looseness. Check torque on below bolts.
• Lubrication – Grease any zerk fittings on control arms or tie rods. The lift increases angle on CV joints, so check CV boot condition.
• Ball Joints and Tie Rods – The added lift can accelerate wear. Inspect ball joints and tie rod ends for play.
• Alignment Schedule – After rough off-roading or every 12 months, check alignment to prevent premature tire wear.
• Tire Rotation – Rotate tires every 5,000-7,000 miles to ensure even tread wear.

Comparison with OEM Parts

The stock suspension on Chevrolet/GMC trucks of this era has a noticeable rake—front sits lower than rear. Part number 288 raises the front to nearly level. Compared to replacement coil-over struts or complete lift kits, the spacer is a budget-friendly option that preserves factory ride quality. It does not change the spring rate, so towing capacity and payload are not significantly affected. However, if you seek maximum off-road articulation or heavy towing, a full lift kit with new springs and shocks may be preferable. The spacer is ideal for daily drivers wanting a level look and ability to run larger tires without a major investment.

When to Choose the 288 Kit

• You want a 3-inch front lift only (no rear lift included).
• You have a limited budget.
• You prefer to keep the stock struts.
• Your vehicle is a daily driver with occasional off-road use.

When to Consider an Alternative

• You need more than 3 inches of lift.
• You have a torsion bar front suspension (this kit won’t fit).
• You want to replace worn struts anyway—then consider a pre-assembled lift strut.
• You plan to tow heavy loads often (spacer lift may alter geometry).

Frequently Asked Questions

Will part number 288 fit a 2004 Chevy Tahoe Z71? Yes, the 2004 Tahoe Z71 uses the same front strut design as the standard Tahoe. The kit should fit. Confirm by checking if your Tahoe has torsion bars; Z71 models with torsion bars require a different lift method. Most 2004 Z71s have struts, so it works.

Do I need to replace my shocks after installing this lift? No, the spacer does not affect shock length. The original shocks will work fine. If they are old, consider upgrading to longer-travel shocks for better ride.

Will this lift void my vehicle warranty? If your vehicle is still under factory warranty (older models of 1999-2006 are unlikely), modifications can void coverage for affected components. Aftermarket parts are generally fine once warranty expires.

Can I install the 3-inch rear lift block from another kit to match? Yes, if you want to lift the rear as well. Adding a 3-inch rear block (or 2-inch if you want a slight rake) will maintain a level look. Ensure your rear block includes new U-bolts and axle wrap protection.

How does installation affect the CV axles? The CV axles will operate at a steeper angle. This may reduce CV joint life, especially if the truck is lifted and used off-road. High-angle CV axles are available for lifts this size to prevent premature failure.

Final Recommendation

Supreme Suspensions part number 288 is a reliable, budget-friendly way to add 3 inches of front lift to compatible Chevrolet and GMC trucks and SUVs from the early 2000s. The kit is well-made with quality materials and includes all necessary hardware. Installation is straightforward for a DIY owner with moderate experience, and the results are visually appealing and functional for fitting larger tires. However, it is critical to verify your vehicle’s suspension type before purchase—torsion bar models cannot use this kit. After installation, invest in a professional alignment and keep an eye on CV joint angles. For most daily-driven trucks that just need a level stance and clearance for 33-inch tires, the 288 kit delivers without breaking the bank. Consider pairing it with a matching rear lift for a fully leveled look.