In my words
I bolt PowerStroke Shocks Rear Spring Assortment on before a race weekend, not after one.
fitted rear. Aluminum is stiff and plastic is forgiving — on a rough track the forgiving part wins.
Stock on small-batch sets moves quickly, so the listing is the honest source for what is left.
What Pro-Line says about it
- Six Primary Springs (black/short)
- Six Secondary Springs (silver/long)
- Color coded stripes to identify rates
Questions I get about this set
Aluminum or plastic?
Aluminum holds geometry and transfers the hit; plastic bends and comes back. On a rough outdoor track I take plastic in the front and aluminum in the back.
Do I need special tools?
A hex driver set that actually fits, thread-lock and a bench. Rounded hardware costs more time than any part on this page.
