I cant seem to find what the spring codes are. My brother has the spring code 4n and I have 6n. I know that 4 and 6 are for the torsion bars and n for the rear but what are their capacities?

 

I guess nobody knows

 

I get nothing. Well almost nothing, -I've seen them marked in that fashion off the production line, but that's about it. Why?

 

I was looking at getting different leaf springs and wanted to know what the stock spring capacity was to see the difference between the stock springs and the ones I was going to get. That's when I saw that my brother had a different spring code so I was curious what the differences were