Reviews: Pro Comp Degree Shim - 99-400B

Did what they were supposed to. They seem like a good quality product and we use 4 wheel parts regularly.

In stock fast delivery what's more to ask for! 4wp has been killer for shipping and readily available items

Buy It Dont Ever Need, So Underrated Cant knot slide

Perfect to do the job. Easily narrowed to fit my skinny springs on my '33 Chevy

Helped us set the correct pinion angle. Vibration GONE!

It's a great product to get your pinion angle right!i played with ladder bars and the best result i had was using pinion shims and floating traction bars above the leaf.Best results compared to 4 link.I'm using this formula on a modified AMRA mud-truck .

I used this 4 degree shim to correct the drive line angles of my jeep, and let me tell you, it helped it out a lot. It reduces the un-necessary wear of the u-jonts and gives them more life.

This time it is more the vendor (4 Wheel Parts) then the part that makes the difference. They carry a good selection and have good people to help you make the selection. It is a "Total Package" Tks

Got these shims after installing a lift on my ‘22 Tacoma to fix some driveline vibration issues. They worked as intended, but installing them wasn’t as straightforward as I’d hoped. You’ll need to make sure you get new center pins as well. If you’re also in a Tacoma, you’re going to need a spacer for the center pin. Without that spacer, the center pin won’t protrude far enough from the leaf pack, through the shim, into the axle slot. Sure, you can trust that the u-bolts with hood everything in place if torque’d properly, but there’s still a non-zero chance of the leaf pack sliding around. What I ultimately chose to do was drill out the nut that came on my old center pins, and placed it over the new center pins as a spacer. I was about to get an extra 3/8” protrusion through the shim and everything slotted in real nice.