“Bought as a replacement for the 7k default springs on the Monopro coilovers on my Fairlady because I'm not 22 anymore and back pain is real.
The old springs had been on there 5 years, 25k, driven on salt, dirt, sand, mud and had surface corrosion but were otherwise ok. Paint finish on these is as good as the old ones were so can't see them being any less hardy. Shocks are still good and taut, for reference to anyone considering Monopros.
These 6k ones (and the relevant softer spec on the rear) have definitely improved the ride.
Will buy again as and when the shocks/bushes/topmounts on these coilovers eventually die.”
