Hello, Im new here but tryin to get some true feedback before I jump into doing this on my DD truck.. Im lookin to install some 2'' drop shackles on 07 RCSB F150 and Im worried of possibly runnin into the vibration issue that some have stated to have after installin them.. I know how to install the shackles.. but I dunno on installing shims and what not and would rather just not screw up and already vibration free truck if thats goin to happen.. but Im really hoping it dont b/c I really wantin to drop the rear and put on some 20s go for streettruck look.. thanks for anyones advice--

also anyone know if the Belltech 2'' dropshackles- part #6406 works on the 07 F150.. summitracing shows no dropshackles for the 07-- but the Belltech 6406 on stylintrucks.com shows for 04-09 models and its on summit as well but only for 04 models??, rather just get them from summit their cheaper.. ??

 

I had no vibration issues after installing my drop shackles, i didn't even shim it when I did a full 2/4 drop on mine either

 

I had no driveline issues with my GF 2" drop shackles. GF91200 comes with pinion shims. Many members here run the GF91200.

 

I have the Ground Force kit that comes with the shims. No issues in 88,000 miles.

 

Eibach shackles with shims and no vibes ever.....

 

thanks for the replies,.. Yeah I was wondering due to I know how to install and have installed shackles before another vehicle but they were lift shackles, and I have never seen or heard of how to install shims, or what not.
I was wanting to do it myself in the driveway, but I dont wanna run into the driveline issue, Im hopin to just do it, drive it and see if it does, or if I can figure out how to install the shims correctly Id just go ahead and do it all together. thanks --

 

The shims are pretty easily done. A diagram comes with the kit. Just need jack stands and a floor jack.

 

oh ok, good.. thanks^.. So which kit and where should I get one from.. I want to get a kit that includes the shims incase I need them.. I tried on summitracing but they are not showing any drop shackle kits for 07s, should I just get some GroundForce ones that are for 04s and up..

 

I went with the Ground Force kit, couldn't be happier. It was part number 91201.

 

Whats the different between Ground Force kit #91200 and the kit #91201??-- To be honest, Id really like to just go ahead and jump to a full out lowering kit such as 2/4 or 3/5 but after my experience with my last DD truck which was a 2000 S10 ZR2 screwing with the suspension doing a 6inch Superlift and 2bodylift w/33s it rode like **** afterwards wished I woulda just left it stock... Now Im sure lowering a truck for a street look with a true product through reputable company that would provide a great dependable ride everyday then I probably would do it.. but I may just have to wait on that for a little while.. thanks for all the replies

 

Anyone know the difference between the GroundForce 91200 and the 9201 kit? I was wondering b/c the 91200 says their for 04-06s and mines an 07 I didnt think it mattered?? I can get the 91200 when I make a run to summit so thats why Id just want to get them, they dont have the 91201 in stock?? The have the 91201 not in stock but at $108+ and then kit 91200 at $96.95?

 

I think the 91201 includes the rubber bushings.
http://www.groundforce.com/vehicle.a...ord&make=F-150

 

i put 2"drop shackles and removed overload leaf and have a little vibration at 25mph... but i have no shims ... probably would not have vibration if i left the leaf in... i would put shims in if in did it over..

 

The difference is the 91200 has PE bushings and the 91201 has rubber OE style bushings.

 

I installed the shims with mine. It took a couple hours to do the whole kit. I got mine from 4wheelparts.com because they had 10% off at the time.