View Full Version : IRS Shock Springs 350# or 750#?
MPTech
04-12-2011, 11:11 PM
I assembled my rear shocks this weekend and saw that the springs were stamped 750#, the packing list also says FFR# 25961 Spring 2.5" ID x 8" length 750# but the Assembly Manual (printed and electronic) both say 350#.
Please tell me which is correct (750# I hope!)
I noticed that in the manual.
Based on (a lot of) IRS related posts I've read, I'm pretty sure that they are supposed to be 750#. I think 350# is a copy/paste (mistake) from the 3-link instructions.
750# came with my kit also (7477).
HTH,
Mike
Someday I Suppose
04-13-2011, 08:07 AM
On the Koni shocks 750 is the correct spring for the rear, and I think the fronts are 450. The older Bilsteins were shipped with 350lb springs on all four corners which is what the manual is referencing.
Listen to Brian not me :-) The Bilsteins maybe came with 500 lbs on all four corners?? I can't remember now....
-Scott
Brian Z
04-13-2011, 10:30 AM
The IRS rear uses 750# springs. The 350# springs are for the 3 or 4 link solid axle rear ends.
Best regards,
Brian @ FFR
MPTech
04-13-2011, 12:34 PM
Good to know, Thanks!
OK, maybe a manual update is in order then, to avoid future confusion.
btw, my new front Konis are 500#.