Carli Suspension 2005-Current Ford 2° Pinion Shim Kit

Should be in every 3.5” Carli Full Progressive Leaf Spring Kit

I installed the full progressive rear leafs on my 2026 F250 with the full Carli 3.5” backcountry kit. The rear springs are softer than the stock and the pinion sags down a bit compared to stock putting more angle on the driveshaft. Had a vibration at 25 mph and again at higher speeds. Really annoying and I was disappointed… until I installed these 2 degree shims, instant fix, truck rides smooth like brand new again. Carli should include this in every full progressive leaf install.

Solved my issue!

After doing a level from Carli on my 2021 f250 I had a bad vibration/ grinding noise from the rear end. This kit solved my issue completely!

Super happy with the service I received! Can’t say enough on how these guys take the time and care to get a guy set up right! Works as advertised! Thanks CJC!