This SES Suspension Upgrade can be adapted to fit the rear suspension of most Chevrolet & GMC W4500 & W5500 and Isuzu NPR NQR & NRR medium & heavy-duty trucks equipped with leaf springs (see below for full list of applications). Each laser cut piece of steel is precision bent and powder-coated to ensure a quality fit. We’ve engineered our hollow rubber springs to deliver a progressive spring rate. In other words, the more weight that pushes down on the rubber springs the harder they work to prevent rear end sag and help stabilize the load.

This kit is rated at 8600 lbs. capacity. Even though you’re increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.

Product Features:

• Eliminate Vehicle Squatting & Sagging
• Cushion Road Shocks
• Improve Handling
• Satisfaction Guarantee
• Lifetime Warranty

Applications:

• 1988 – 2009 Chevrolet W4
• 1988 – 2009 Chevrolet W4000
• 1988 – 2009 Chevrolet W4500
• 1988 – 2009 Chevrolet W5
• 1988 – 2009 Chevrolet W5000
• 1988 – 2009 Chevrolet W5500
• 2017 – 2023 GMC 3500 Express Cube Van (Low Cab Forward)
• 2017 – 2023 GMC 4500 Express Cube Van (Low Cab Forward)
• 2017 – 2023 GMC 5500 Express Cube Van (Low Cab Forward)
• 1988 – 2023 Isuzu NPR
• 1988 – 2023 Isuzu NPRHD
• 1988 – 2023 Isuzu NPRXD
• 1988 – 2023 Isuzu NQR
• 1988 – 2023 Isuzu NRR
• 1988 – 2023 Isuzu Reach