HV-138140 Helper Spring for RAM ProMaster – Rear Axle Suspension Support
Looking to improve ride height and rear suspension support for your RAM ProMaster 1500, 2500 or 3500? The MAD HV-138140 helper spring is a compact, bolt-on solution designed to reduce rear-end sag and increase stability — especially under light to moderate load.
Whether you’re carrying tools, parcels, or running a lightly equipped camper conversion, this progressive spring set helps maintain proper ride height and improves driving comfort.
✅ Key Features of the HV-138140
- Designed for RAM ProMaster rear axle (2014–present)
- Ideal for light to medium loads
- Reduces squat and improves stability under load
- Progressive spring action – softer when empty, firmer when loaded
- Fully bolt-on installation – no welding or cutting
Works with your original shock absorbers.
💡 When Should You Choose the HV-138140?
- Your ProMaster regularly carries some load, but not extremely heavy cargo
- You want to reduce rear-end sag without making the ride too stiff
- You want a low-cost solution that fits OEM shock absorbers
🚚 What's Included
- 2 progressive MAD helper springs (left/right)
- All necessary mounting hardware
- Step-by-step installation instructions
- US shipping, import duties & handling – included in the price
💲 Order Now – Shipped from Europe to the U.S.
The HV-138140 helper spring kit is stocked in Europe and shipped directly to U.S. customers with all costs included — no surprises.
👉 Contact us if you’re unsure whether this kit fits your needs. We're happy to help you select the right setup for your van or camper build.
🔧 Technical Specifications
| Specification | Details |
| Part number | HV-138140 |
| Axle position | Rear |
| Vehicle fitment | RAM ProMaster 1500 / 2500 / 3500 (2014–present) |
| Load suitability | Light to moderate cargo use |
| Content weight | 3.88 kg |
| Installation time | Approx. 45 minutes |
| Price (include US shipping, duties, and processing) | $499.00 |
