FBM 8.8 IRS Rear Diff Conversion
 

We designed a conversion kit to put a ford 8.8 IRS into the FRS/BRZ. This is the same setup we used in many fast S2000's around the world.

We chose this option again, because there are tons of gear rations to Pick from.

Our kit will come complete with Driveshaft shop axles, drive shaft, studs, hubs, the whole works.

Pricing TBA

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how much heavier it it? i know it probably doesnt matter since most people buying this are pushing like 55psi with one gazillion horsepower, but just wondering

I'll get the final weight difference, a little extra weight on the rear tires is a good thing :)

Can't wait to test it!

Holy shit you guys do everything.

WOW full-blown are dominating !

i also assume you're another step closer to running that frs into 9's

You guys are really making it hard for me to save any money for a house lol. Props to you guys for releasing so many top quality parts so fast for these cars.

Seriously! Are you guys building a Pro Street FR-S?

Between your dyno numbers and this rear-end integration, I'm starting to think you are building with a purpose in mind! Sub-10 second FR-S maybe?

Scott

Not sure what we are doing yet :)


LOL, we want to go out and have some fun this year.

You missed a bolt...

LOL, yes it was just for mock up.

Does this mean you've found a need for this part? Yes, I'm asking if you blew up the stocker.

They seriously are not F***ing around. I love these guys. They regularly give me something to bore my co-workers with. (co-workers are not car people)

No, but the stubs going into the diff will only allow for a certain diameter axle. Also the ring and pinion is pretty small.

However, we did find tons of shavings every time we tore the cover off the OEM diff. The stock unit probably would of lasted, but we did not want to invest a ton of money in to the axles, drive shaft ect.. just to find out if it will break.

The main advantage to this swap is the gear ratio options . All of which are under $200 a set.

3.08:1
3.27:1
3.55:1
3.73:1
3.90:1
4.10:1
4.30:1