Torque Solution Rear Differential Inserts Subaru WRX 08-24 / STI 08-21 | TS-SU-092

So it is hard to say how this made a difference when I have the Perrin pitch mount and installed the group n trans mount, but just like the videos on IIR’s YouTube, all these components combined gives you a great solid feel in the vehicle with no play or movement through shifts.

Now what was difficult was getting the last bushing on the bottom diff as it was too long and we actually had to cut down a portion of it so that it would fit flush, but other than that easy install.

This was such an easy mod to do at home. It adds a subtle improvement alone, but with other suspension upgrades…the car feels much better.

Makes downshifts smoother and high rpm shifting doesn't jerk.

Came packaged well as always

Very easy install for a big impact in drivetrain feel.

A must have to help get rid of that drivetrain slack . Install wasn’t to difficult

Those work awesome and the ride does make a different

Nice cheap little part that makes a difference.

Make sure you have a razor handy to cut out the little bit of rubber where these slide in, but straight forward and helps with SOME of the bucking for low gear shifts

These are complimentary to other parts. They do not make a huge difference but enough to know that something different has happened. A little install tip, when doing the rear differential, with 17mm bolts. After you put in the bushings ensure that you either leave the bolts a little loose or only torque to spec. Do not go crazy or you will never get the carrier off because things are not lining up correctly. Also the carrier as others have said, and as you can tell in the IIR video is a pain with the bigger bushings. However, they do fit, use a jack and just jack the carrier back into place.