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Rear Differential Brace by P4D

Boricuoso787

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#1
Latest install on my ‘21 Redeye....

Performance Development’s “DIRS” rear DIfferential Reinforcement System. Rated to withstand launches at up to 1000 rwhp. I’m super impressed with how much more “planted” my rear end feels after the install. I’ve only done a few launches and freeway pulls since the install today but I immediately felt the difference. It launches straight as an arrow whereas before, launches could get a bit squirly. Wheel hop is also gone.

I saw enough track launch pumpkin explosion videos, some resulting in $12-$15 in damages, to want to ensure I beefed it up back there on my 3.09 rear diff.

I pulled the trigger and cannot be more satisfied. I’m not affiliated with or getompensation for this post. I simply was so impressed with these folks’ product and costumer service that figured I’d share my experience.

Bray is an amazing guy.

Can’t wait to run a few 1/4’s with this on!
 

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Grape Ape

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#2
They make a great product. I have one of their older braces on my car.
 
OP
Boricuoso787

Boricuoso787

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Thread Starter #3
Agreed!
 

DGatzby

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#4
It was one of the first things I bolted up to my Redeye. Bray was receiving feedback on one of his first of this version, and it was good!
 

Linda's Hell Cat

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#5
Busting those gear boxes was a specialty of mine. I was 1st to break a half shaft, but it was cause by busting the Diff.

The PD4 Diff Brace is the most "Peace of Mind" mod I had installed for racing! :cool:

Enjoy All The Fasssst Fun at the Track!

Linda :)
 

MurderCat

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#6
The real question is has anyone had a failure after installing the DIRS brace? Haven't heard of one yet. Seems to be engineered very well.

Will be putting mine to the test soon :p
 

BULL

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#7
Latest install on my ‘21 Redeye....

Performance Development’s “DIRS” rear DIfferential Reinforcement System. Rated to withstand launches at up to 1000 rwhp. I’m super impressed with how much more “planted” my rear end feels after the install. I’ve only done a few launches and freeway pulls since the install today but I immediately felt the difference. It launches straight as an arrow whereas before, launches could get a bit squirly. Wheel hop is also gone.

I saw enough track launch pumpkin explosion videos, some resulting in $12-$15 in damages, to want to ensure I beefed it up back there on my 3.09 rear diff.

I pulled the trigger and cannot be more satisfied. I’m not affiliated with or getompensation for this post. I simply was so impressed with these folks’ product and costumer service that figured I’d share my experience.

Bray is an amazing guy.

Can’t wait to run a few 1/4’s with this on!


We know Bray/P4D very well here. We all started out together at the "other" place.

I even helped him out with some of the early FEA on the first design.

So no worries about any perceived conflict of interest here. ;)
 
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