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  • Announcing NEW Ford 8.8" rear end kits - Toyota GT86 - Scion FRS - Subaru BRZ
  • Post author
    Joel Grannas

Announcing NEW Ford 8.8" rear end kits - Toyota GT86 - Scion FRS - Subaru BRZ

So, I have been super busy developing two new offerings in the Ford IRS 8.8" lineup. In addition to the MKIV Supra 8.8" kit I am now offering kits for the Lexus IS300 (altezza/is200) as well as the Toyota GT86 (Subaru BRZ / Scion FRS).

Grannas Racing 8.8 swap kit Lexus IS300 IS200 Altezza Subaru BRZ Scion FRS Toyota GT86

These kits require no welding, and bolt right in to replace the factory rear setup. The 8.8 swap kits include a front mount, rear cage/girdle, aluminum cover with integrated load bolts, DSS Level 5 axles, and billet 31 spline 8.8 stubs. These are available as complete kit with a completely rebuilt 8.8 rear end built by me, or you can build one yourself from a junkyard core. All of my built rears come with gear ratio of choice, along with a truetrac LSD, and are setup for high horsepower applications in mind.

One of the advantages to the Grannas Racing kit design is the fact that the rear cage allows you to easily setup the load bolts for the bearing main caps. One of the weak points in the 8.8 is that on hard acceleration/launch the bearing housing can egg-shape which will cause failure of the bearing. The load bolts support the rear caps and keep this from happening. Not only does that add reliability and strength, but the cage design actually acts as a girdle for the entire 8.8 case/pumpkin and adds quite a bit of strength over a standard 8.8 rear setup. The rear cage and front mount also come with a lifetime warranty! I am confident they will hold whatever you throw at them!

The Ford 8.8 is widely used and regarded as a great bang for your buck rear end. It has many many gear options available, which makes it not only very affordable, but also very flexible for racing use! 

These kits work with the smaller 8.8 IRS case, which can be found in the Terminator mustang cobras, the 93-97 Lincoln Mark VIII, and the 89-97 Ford Thunderbird (IRON CASE).  I chose this case because they are smaller and will fit in the tight subframe of the IS300/BRZ/FRS! These junkyard rear diffs can be found at your local junkyard for $100-250.

Here are some pictures of the IS300 Kit:

More pics of the IS300 kit are on the product page which show th


Here are some pictures of the GT86 / BRZ / FRS kit:

More pictures and info are available on the GT86 Ford 8.8 swap kit product page.

The IS300 and the BRZ / FRS share the same OEM rear differential, so these kits are very similar. The only differences are the axle lengths, and the subframe on the GT86 does require some minor trimming for the rear cage mount to fit properly. This is a 5 minute modification and does not cause any negative effects to chassis/suspension rigidity.

How-To video of install coming soon! Any questions contact me here

  • Post author
    Joel Grannas