Steel shims to go between your leaf springs and your spring perch. These are used on leaf spring vehicles in order to adjust pinion angles and achieve proper drive line geometry. Our shims are 2.5" wide, machined from steel, and include a new set of 3/8" diameter center bolts. Select size (in degrees).
Use the calculator below to determine the right size shims. The shim calculator figures out the current joint angle, takes into account how much the drive shaft slope changes as a result of the shim, and aims to achieve a 2-3 degree net joint angle. The calculator is only for double cardan rear drive shafts. If you have something else or if you have questions, give us a call. 801-737-0757
My 2019 Tacoma had some driveline vibration after lifting the truck 2". After installing 2-degree shims, the vibration was gone.
Exactly what castor shims/pinion angle shims are supposed to be like, not aluminum junk!!! Would buy again, and are highly recommend 👍
Very satisfayed of my 12 degree!! Very solid parts. Thanks 4xshaft!
Solid parts everything worked great. My bolts were 7/16th so I had to drill the shims but they are very sturdy and easy to install.
I haven't installed them yet but it is pretty straight forward so I am sure there will be no issues there. The shopping, ordering, and delivery was great. Since I seem to be rebuilding this Jeep (88 YJ) I will be returning for more.