Spring rate

[Fuzion]

Does anyone know what the stock spring rate is for the circuit? Would traxxas ultra shocks springs fit?

 

[WithinU]

Here is a couple of post that might help you. I dont think it answers your questions specifically, but it may get you closer? Hopefully?

https://www.ecxforum.com/threads/different-spring-rates-with-stock-ecx-shocks.1416/

https://www.ecxforum.com/threads/converting-the-amp-mt-to-a-circuit-st-to-race.878/page-2#post-8252

 

[Fuzion]

I found the red ecx soft springs, however they don't seem much softer than stock, the rear springs actually feels firmer than the stock black springs.