Some EB coil rates for reference

[Ranger44]

James Duff: Progressive rate: 3.5" are 250, our 5.5" is 390 both +/- 10%

Tom's Bronco: Progressive rate:
the 1st rate is 180 and the second rate is 315 on the 3.5 and 5.5 coils
the 1st rate is 270and the second rate is 375 on the 2.5 and stock coils

Bronco Graveyard:

Superflex EB coils are 190 lbs per inch. (available in 20-20.5"/21.5"/22.5"/& 23.5")
78-79 Superflex coils are 300 lbs per inch. (F150? or reg bronco?)

Also have superlift coils for EB's (320ppi at 18.5", and a 415ppi at 20")

All lengths are FREE LENGTH.

 

[Bray D]

Wildhorses 4x4 3.5" EB Rockcrawler dual rate coils - 204/375

 

[dangerous_rangerous]

can we get spring lengths for these too?

 

[86 slo-vo]

good info...and i agree spring lengths would be great

 

[Ranger44]

I'm pretty sure bronco graveyard has all their free lengths laid out.

This is info the companies e-mailed me when I was researching EB springs as an option for my suspension. Since there is generally confusion about these spring rates I wanted to post up and share

 

[ThatGuy]

Only one I know is the Duff coils are 23"---the 3.5" and 5.5" are the same height but increased coil diameter provides different rates thus different lift heights.

 

[Bray D]

My info came from an email from the company, so my info is legit as well. They may have listed the free length, I'll have to see if I can dig up the email.