NORCAL SS

Lowering these trucks and installing aftermarket kits some of these trucks have a vibration. My cousins truck is stock and when its loaded it vibrates also. I fixed it with some shims but just wanted to post up the pdf from ford to help other guys hers.

Ive installed the ford shim kits and they work also on my customers trucks ive done.

20redline

I installed some 2" drop shackles and now notice a vibration would installin the shim kit help remove vibration

flash69

I have a slight vibration also from 2" shackles.

CuznVinny

iTrader: (1)

Anyone know what angle they are?
at $200 for a shim kit, better off with belltech or spc shims for $25

Jimaa66

Good of you to post the tsb, Tony. Thx.

TheSuspensionSource

Good info! Most of the time Belltech Part# 4974 fixes the vibration if you are just using a shackle.

NORCAL SS

no problem thats what im here for. Ive been doing a lot of kits on here lately and people have been pretty happy. The belltech kit works also for shims but some ive done 2.5 is not enough.

hi-rev

what about if you have helper bags Tony