For sale: 3 cm stiff springs, guaranteed. I bought them from their owner, who guaranteed them. It's been about two months since I bought them and haven't used them. I installed them on a Desert suspension, which is known for its quality in desert suspension manufacturing. Their new price is 790. They were installed on a Hilux without a double. Selling to the highest bidder. The highest bid is 250, and the sale is not far off.