Ideal pinion angle is 1°-3° in stock applications; this is the guideline we’ve always used. We’ve had a few customers report a driveline vibration around 70mph when under power from the rear driveline. All have provided specs withing the 1°-3° range. We brought an affected vehicle into the shop and installed these 2° pinion shims which alleviated the issue.
The end pinion measurement on the two tested vehicles was 4° and 5°; both were perfectly smooth under power at all speeds. This caused us to toss the accepted 1°-3° spec out the window accepting the higher figure for lifted applications; after all, you can’t argue with results!
Please note, these will NOT combine with any lift block. Customers running blocks will need to seek a tapered block solution. These will also NOT work with OEM leaf springs or add a packs.
Customer Reviews
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!
I installed Carli 2.5"-3" pintop lift on my 2022 F250 Platinum. I noticed a vibration when traveling 75mph and let off the accelerator. I was chasing my tail. Luckily these 2° plates fixed the issue. No more vibration, no more grind noise. Customer service reps have been fantastic throughout the whole process! Thank you all!
