This table was produced after reading an article in Peterson's Off Road Magazine. They published a table that did not include Toyota aftermarket springs so I decided to compile my own. Twelve companies were contacted by mail and only the companies listed below responded. (9 Oct 1999)
Company Product Spring Rate
lbs/in# of Leaves Free Arch
inchesDowney Front 3" 286 4 5.4 Downey Rear 2" 137 4 9.1 Downey Rear 3" 137 4 10.0 Warn/Black Diamond Front 3.5" 330 4 5.4 Trail Master Front 4" 300 3 N/A