Originally Posted by Heider
ok what are helper springs? my google searching mostly shows they are used with trucks/suv's to increeeeese the load limit.
Helper springs are springs that are low in rate in comparison to the main springs which take up slack in the suspension before the main springs do their work. In most cases, these helper springs are flat and are compressed most of the time.
Basically, its kind of an aftermarket way of doing what stock springs do with progressive rates. Soft, then stiff as you compress them.
**Experts- correct me if I'm wrong since this is my understanding of how to use them**