I’ve got Megan racing track coilovers and they came with 12kg/mm front and 10kg/mm rear springs. They’re a bit too stiff for me, so I’m looking for a pair of 8kg/mm (~450lb/in) springs.
Dimensions:
2.5" ID (~62mm)
7" free length (+/- an inch or so).
I’m planning on putting the 10s from the back to the front, so I’ll have 12s up for grabs if anyone wants them.