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
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.
After watching the video and taking the measurements a few times. I called and talked it over with one of the guys, and he got the same thing that I came up with. I was still wrong. The product is great exactly what was promised.
I have a 2nd gen Tacoma and went crazy on the lift (the shop I went sold me on it). Next comes the driveline hum and attempts to self diagnose and the problem since no one could seem to help at these shops. Finally found some answers online and ordered the 3* shim and it completely cured my issues. It is a very nice looking product and everything fit perfectly. Thanks!