14-21 Promaster Helper Springs

The 14-21 Promaster Helper Springs are designed to enhance the load-support suspension of Ram ProMaster vans manufactured between 2014 and 2021. These springs are particularly beneficial for those using their ProMaster for commercial delivery, mobile service work, or frequent payload hauling, addressing the common issue of rear-end sagging under heavy cargo.

Constructed from high-carbon steel and finished with a protective powder coat, these helper springs provide progressive support that engages under load. They are designed to mount between the axle housing and frame, working in parallel with existing leaf springs to increase overall load capacity without altering ride quality during light-load conditions. The springs are calibrated to offer an additional load support rating of 2,000–3,500 lbs, depending on the setup and load distribution.

Installation is straightforward, requiring no welding and utilizing OEM mounting points, making it an accessible bolt-on upgrade for any mechanic. This product is ideal for those who regularly max out their ProMaster's payload capacity or tow, ensuring improved handling and reduced wear on shocks. With these helper springs, users can maintain a level ride height even when fully loaded.