Question about Skyjacker and James Duff TTB coils

[JoseBronco]

Hi all,
I would like to know how much measure the section of wire of a Skyjacker and James Duff coils, and if it is possible in milimeters.

Measuring like this:

I also have checked some coils:

Stock BII coil = 15 mm
Rancho 2.5" lift coil = 16 mm
Superlift 4.5" lift coil = 18.5 mm

 

[4x4junkie]

My 6" SJ RBV TTB coils are right about .71 inches (or 18mm) wire diameter.

Of course if you're trying to calculate their spring rate (stiffness), you'll need more info than just their wire diameter... you'll also need the overall diameter of the coil (4.5", or 114.3mm is standard for all RBV coils), and the number of windings it has, too (12 for the 6" SJ).

 

[JoseBronco]

I was counting the windings:
Stock: 9
Rancho 2.5" : 12
Superlift 4.5" : 10

Thankyou for your help, now I have some interesting info if I order custom coils.