Lock In Perfect Pinion Alignment With Our Boss Level Shim Kit For Chevy Gm Ten Bolt Eight Point Five And Eight Point Six Inch Rears From Seventy Two To Twenty Thirteen Trucks And Street Rods

Improve Rear Axle Alignment With Precision Shim Sets
✔️ Fits GM 10 bolt rears for model years 1972 through 2013

This complete shim set helps you align the ring and pinion gears inside your differential casing. You will drop the components directly into older truck frames and street rods to fix gear noise and drive shaft vibration.

✅ Includes precise spacer options for contact pattern tuning
✅ Matches eight point five inch and eight point six inch ring gear heights
✅ Restores proper roller bearing preload across faded axle housings

💡 What causes poor gear mesh in older differential housings?
You usually deal with sloppy roller placement when old repair guides lack exact spacer sizes.
- Handy shim packs gonna fix pinion angles on tired axle rigs without cracking the casing open
- Even contact rings stop early edge scoring while you run heavy duty tires and gear ratios
- Balanced side loading keeps transfer case oil cool during steep canyon runs and trailer hauls

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