Are these coils the triple rate coils? I specifically ask for the triple rate coils with my lift, not the progressives that Northridge had in stock. It took 3.5 months to get them directly from Rock Krawler. I just wanna be sure its them. I can't tell by looking.

 

Triple rate is progressive. It used to have liner coils in the back I think thats what you mean, and yes it looks like you have the triple rates front and rear.

 

I don't think. Rock Krawler first had linear coils. then, progressive coils in some lifts. Around December last year, their new type of coil is called triple rate. It is not the same as progressive. Thats my understanding. Because I ordered my 3.5 flex system in early Janurary. I told Northridge ( Canada ) I don't want the progressive coils you have in stock with all the RK suspensions, I want the new triple rate coils. Stan at Northridge then said the same as you. Its the same coil. So, i emailed Rock Krawler for some clarity. This was their response... ( FYI, I had a question about bushings too )

Yes all the 1.5", 2.5" and 3.5" kits as of last week are shipping with the new triple rate coils front and rear. As far as bushings go they are absolutely fine you should have no issues with them. Daystar who makes our bushings for us removed a certain catalyst from their line and it resulted in a bad batch of bushings which we were not aware of until they had been shipped out. Needless to say the problem was resolved quickly and anyone from that time frame that has an issue with a bushing can call and receive a replacement as long as the order date is verified.

So back to my orgional question. Can anyone verify that those coils are actually triple rate?

 

Yes those are the triple rates.... I have the 2.5 with the same springs, RK has not made a progressive rear spring besides the triple rates, the front might have been different but since your received all progressive rate springs they are the new ones. Progressive rate just means that the spring load range changes through the spring hence triple rate.

 

Old rears were linear so yes those are the new TR which is a type of progressive coil

 

Did you look at rock krawler's site?

 

Triple rate diagram
They look correct