Originally Posted by
ta_man
Associated SC10 4X4 (13MM) springs also fit Traxxas GTR shocks and have slightly different spring rates from the Losi springs.
I think the Tekno ET410 springs will also fit but I haven't tried them yet.
Yup, the Tekno ET410 springs fit the GTR shocks nicely, I'm running a set on mine, you can get them in pretty stiff rates (red or orange).