Suspension · Rear axle
Helper Spring Assist Kit
Progressive helper springs that add support when the van is loaded and stay out of the way when it isn't. No compressor, no lines, nothing to maintain.
MSRP$680
Available atSprinterStore
01
Support that scales
The springs engage progressively as the load grows, so an empty van rides close to stock and a full one doesn't bottom out.
02
Nothing to maintain
No air, no lines, no fittings. Install it once and forget about it.
03
Built for work vans
A simple fix for fleet and trade vans that run heavy every day.
Specifications
Specs
| Axle | Rear |
|---|---|
| Type | Progressive helper spring |
| Fits | NCV3 2007–18, VS30 2019+ |
| Models | 2500, 3500 |
| Added capacity | [confirm] |
| Install time | [confirm] |
In the box
What ships
- 2×Helper springs
- 2×Mounting brackets
- 1×Install hardware kit
Fitment
Find your version
T1N is 2002–06, NCV3 is 2007–18, VS30 is 2019 on. The model number (2500 or 3500) is on the driver's door jamb label.
| Version | Fits | SKU | MSRP |
|---|---|---|---|
| 2500 | NCV3 · VS30 | SPTK-S-1400-25 | $680 |
| 3500 | NCV3 · VS30 | SPTK-S-1403-35 | $880 |
VIDEO — helper spring install on an NCV3 2500
Install
Install overview
- 01Support the frame and unload the rear axle.
- 02Fit the lower brackets to the axle.
- 03Position the helper springs and mount to the frame.
- 04Torque to spec and check clearance at full droop.
FAQ
Common questions
Helper springs or air bags?
Helper springs are simpler and need no maintenance. Air bags let you adjust for different loads. If your load changes a lot, choose air.
Will it make the ride harsher?
Unloaded ride stays close to stock because the springs engage progressively.
Does it fit 4x4?
[confirm]
Where to buy