Rear Air Suspension Kit for 2001-2010 Chevrolet/GMC 2500HD | SPELAB

Stop the Squat. Take Back Control of Your Towing.

If you use your 2001-2010 Chevrolet Silverado & GMC Sierra 2500HD for its intended purpose—hauling heavy cargo, pulling a massive 5th-wheel RV, or loading up construction gear—you know the terrifying feeling of "truck squat." When your rear end sags under a heavy payload, your front tires lose traction, your steering feels light and unresponsive, and your headlights point directly into the trees instead of the road.

Worst of all, a sagging rear suspension forces you to endure a brutal, white-knuckle ride where every pothole causes a harsh bottom-out.

Level Your Load with SPELAB's 7,500-LB Heavy-Duty Air Suspension.
Engineered for the most demanding towing applications, this premium air helper spring kit acts as a muscular support system for your factory leaf springs. Fully adjustable from 0 to 150 PSI, these heavy-duty air bags easily level up to 7,500 pounds of payload.

By restoring your truck's proper ride height, this kit eliminates trailer sway, body roll, and bottoming out. Get your steering geometry back, protect your tires, and experience a smooth, stable, and confident towing experience—no matter how much weight is in the bed.

Fitment

• 2001-2010 Chevrolet Silverado 2500HD
• 2001-2010 GMC Sierra 2500HD

Key Benefits

• Massive 7,500 LBS Load-Leveling Capacity
  Engineered to support significantly more weight than standard aftermarket kits. Effortlessly levels the heaviest 5th-wheel pin weights, heavy equipment trailers, or fully loaded truck beds, restoring a safe and level ride height.

• Eliminates "Truck Squat" & Sway
  Automatically adjusts your ride height to counteract heavy rear loads. Keeps your front tires firmly planted on the road for precise steering, safe braking distances, and proper headlight alignment.

• Extreme-Duty 6mm Thick Rubber
  Constructed from multi-layer reinforced rubber boasting an impressive 5.9-6.0mm thickness. Provides incredible resistance to road debris, abrasions, and leaks, ensuring long-lasting reliability in harsh towing environments.

• Fully Adjustable Air Pressure (0-150 PSI)
  Inflate when heavily loaded and deflate when riding empty. Gives you total control to fine-tune your suspension stiffness for a buttery-smooth ride, whether you are hauling a tractor or cruising to the grocery store.

• Shock-Absorbing Ride Quality
  The pneumatic air springs act as a dynamic cushion between your axle and frame. Absorbs harsh road impacts, reducing driver fatigue and preventing damage to your fragile RV or cargo contents.

• Ultra-High Burst Pressure Safety
  While the maximum operating pressure is 150 PSI, these bags boast a laboratory-tested burst pressure of 435 PSI (3 MPa). Gives you absolute peace of mind that your air bags won't blow out under sudden impacts or severe compression while fully loaded.

Product Specifications

Ideal Usage Scenarios

• RV & 5th-Wheel Towing: Eliminates the aggressive rear-end sag caused by heavy kingpin weights, stopping porpoising (bouncing) on the highway.

• Contractors & Work Trucks: Keeps your truck level when the bed is loaded with heavy tools, lumber, or gravel, preventing premature leaf spring wear.

• Family Hauling: Provides a smooth, comfortable ride for passengers in the cab, completely eliminating harsh metal-to-metal bottoming out over speed bumps.
  

Q: Does this kit increase my truck's maximum Gross Vehicle Weight Rating (GVWR)?
A: No. Air suspension kits are designed to level and support the load, making it safer and more comfortable to carry. You should never exceed the factory-rated maximum GVWR or payload capacity set by GMC.

Q: Do these bags have an internal jounce bumper?
A: No. These air springs are designed without an internal jounce bumper. This allows for a larger internal air volume, which results in a smoother, less jarring ride quality when towing. However, you must maintain a minimum of 5-10 PSI in the bags at all times to prevent them from bottoming out and tearing.

Q: What is the maximum pressure I can run?
A: The recommended maximum operating pressure is 150 PSI. While these heavy-duty bags are tested to withstand a burst pressure of 435 PSI, you must strictly adhere to the 150 PSI limit for safe, daily operation.

Q: How thick is the rubber compared to other brands?
A: Most standard aftermarket air bags use 3mm to 4.5mm rubber. The SPELAB kit utilizes ultra-thick 5.9mm - 6.0mm multi-layer rubber, offering vastly superior resistance to leaks, abrasions, and blowouts.

Q: Will this make my truck ride stiff when it's empty?
A: Not at all! When you are not towing, simply deflate the air bags to the minimum 5 PSI. Your truck will ride smoothly on its factory suspension just like it did before the installation.