Custom spring solutions start with the unit.
Working vehicles are not all loaded or equipped the same way. We review the spring pack, stance, installed equipment and intended use before discussing rearching, rebuilding or an add a leaf solution.

Vehicle size, account type and service limits apply.
Check vehicle acceptanceStart with what changed.
- The unit has a persistent low stance
- Added equipment has changed how the vehicle sits
- A direct catalogue replacement is not available
- The current pack needs rebuilding rather than a single leaf
- The operator wants support reviewed for the normal working load
What we can review.
- Spring pack rearching
- Spring pack rebuilding
- Add a leaf solutions
- Custom leaf matching and shaping where suitable
- Related U bolts and mounting hardware
From the reported concern to an approved scope.
Vehicle configuration, access and the requested work are reviewed before the next stage is confirmed.
- 01
Understand the current vehicle use and installed equipment
- 02
Measure the stance, spring and mounting arrangement
- 03
Review the safest practical option
- 04
Confirm parts, work scope and approval before proceeding
The details behind the work.



Questions about this service.
Direct answers help confirm whether the unit and requested work belong at Standard HiRail.
Does an add a leaf increase the rated vehicle capacity?
No. It may change support or ride characteristics, but it does not change the manufacturer’s GVWR or axle ratings.
Do you need the vehicle before recommending rearching?
Yes. Photos and unit details can help us prepare, but measurements and physical inspection are normally needed before the final recommendation.
Talk through the custom spring work concern.
Have the unit number, year, make, model and a short description ready. We will confirm whether the vehicle and requested work fit our current service scope.
