Great product, probably was the first thing I bought for my car before the mods started. Thanks for all your research and development time!

 

To date, not one instance of case failure from our customers with over 1,000 braces installed and cars pushing 1,300 rwhp with drag tires.

Wish I had the HP to properly test the limits of the brace! Thanks for a great innovative product and continued R&D!!

 

Recently, a competitive product was introduced and you may have seen pictures of it here or on Facebook.

The purpose of this thread is not to start a debate but to shed some light on why we do what we do and why we will continue to do it!

For those of you are not familiar with the genesis of the rear differential brace, back in the winter of 2016/2017 I Mo-par! began to develop a brace to help protect against case failures that were occurring and bridge the gap between cars that had stock and increased HP who did not want to upgrade to an aftermarket differential replacement. There was no brace product on the market for our Mopars and P4D was formed and we set out to make one. We were also excited to discover a brace could be developed without drilling into the vehicle (thanks FCA!)

You can read all of the R&D details here: http://www.hellcat.org/threads/being-manufactured-brace-to-prevent-differential-case-breakage.83201/

Prototypes were developed and sent to some of our forum members that were tracking or tuning their Hellcats. With member feedback, we came up with a robust design that would protect the differential and not contribute to any noticeable increase in NVH with the stock driveshaft and differential.

Here is a picture of one of the original braces (2015-2017 Standard Brace kit):
View attachment 424833

We quickly sold out of our trial run of 30 brace kits, became a vendor here on the forum (thanks Dayle), and have been innovating ever since. In fact, bam bam, who installed a Borla exhaust system on his HC fabricated a mock version of what is now our reduced clearance brace & 2018 model brace including the Demon. Also, another one of our forum members was kind enough and do some strength test modeling.

View attachment 424865

Finally, in June 2017 we filed a design patent application.

Here is a picture of a prototype reduced clearance brace:

View attachment 424841

Here is a picture of our 2018 brace including the Demon:
View attachment 424849

It is important to note that with my professional material assessment background, our choice to go with .25" US-made steel was very deliberate:
1) it is ductile
2) it is strong
3) it will bend under extreme stress.

Also our selection of isolating rubber and nylon spacer material was also researched for important characteristics like strength, durometer and chemical resistant properties. Our choice to use self-locking nuts for the cross-member is also deliberate.

What has all of this research resulted in?
1) To date, not one instance of case failure from our customers with over 1,000 braces installed and cars pushing 1,300 rwhp with drag tires.
2) Only four reported instances of differential gear failure but not case failure. Our brace diverted the mode of failure from the case to the internals saving additional costly repairs.
3) cole3986 recently bending the brace but not breaking the differential with his 8 second Hellcat. This validates the selection of steel as the right choice of material for Per4Mance Development braces.
4) Strong partnerships with several Mopar experts and tuners.

Over the next two months we will have some exciting news to report on our product line and other innovations currently in R&D. While we will never be all things to all potential customers, we will remain focused on our mission to be the differential brace of choice for the performance oriented customer.

Please feel free to PM us anytime with any questions or comments.

Thanks! Bray Mo-par! Per4Mance Development

 

Great product!

 

 

going in for tuning etc. early summer. I will be purchasing one from you. Thanks for the work.

 

Would you say your Standard Brace Kit and your Reduced Clearance Brace Kit are equally as strong? I like the look/fitment Reduce Clearance Brace, just wondering?


Standard:

Reduced Clearance:

Reduced Clearance showed installed on 2018 model:

 

Would you say your Standard Brace Kit and your Reduced Clearance Brace Kit are equally as strong? I like the look/fitment Reduce Clearance Brace, just wondering?


Standard:

Reduced Clearance:

Reduced Clearance showed installed on 2018 model:

Equally as strong.

 

Do you make a brace for the 08 challenger


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Do you make a brace for the 08 challenger


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Unfortunately not at this time...the case design on the Getrag diff is very much different than the 2015 and newer ZF units. Here is a pic of the Getrag. As you can see there are no main case bolts pointing towards the rear of the car like the ZF where we attach the brace...

 

Your brace was also 1 of my first mods rite after DR's & Wiles aluminum ds. I think these 3 mods go hand in hand. I have had no noticed NVH & I know it's doing it's job.
Thanks for a great product !

 

Per4Mance Development brace is the best. I have them on my Hellcat and Demon. Thanks Bray for your hard work.

 

I am about to post a new thread about installing both braces. Ill be honest I initially preferred the TBA because it "looked" better. But it leaves absolutely no margin of error for manufacturing tolerances (in the car). Your instructions note one big problem I ran into with the TBA. You said if there was binding in the nylon Buttress of yours to simply drill it out Well you can't do that with the TBA unless you have a machine shop nearby to enlarge his aluminum holes. I have a 16 with the threaded holes in crossmember and they are not perfectly straight. I can't even tighten the bolts because they bind so much. Not only that, his rubber pad is not thick enough. I couldn't tighten the bolts to cross member near enough to make the rubber pad touch much less compress. It needs a nylon buttress like yours that will flex slightly. I ended up giving up on his and installed yours. Your 2 piece design allows for some manufacturing tolerance differences. As an end user I can drill through nylon but not billet aluminum. Your design was clearly more thought out and tested on multiple vehicles. Ironically I might could have made the TBA work with your rubber pad but the passenger side bolt was in to much of a bind. I gave up and had yours installed in 10 minutes. Your instructions are better and indicated the issues that might arise. With all this being said I do have a 3.09 in my 16. Not sure if that made a difference

I'll create a thread with a couple of pictures of the issues I ran into with the TBA.

 

The 2015+ differential cases for the various ratios are the same. There are cross-member differences we account for. Having the car on the ground or on a lift should have no impact on installation; I've installed several braces on my lift (both of our designs) and several on ramps trackside at MSHS events. The one thing to avoid is jacking up just one side of the vehicle to do an install.

 

I've installed several braces on my lift (both of our designs) and several on ramps trackside at MSHS events.

Bray, I've seen you on the ground. lol

 

Happy customer here and purchased on your second batch production. Brace is holding up great and I recommend to everyone I meet to get one asap.

Thanks for the decals by the way Bray!!

Ted

 

Amazing product. I have a reduced clearance brace on my 16 Challenger Hellcat and it was a simple quick installation job. I have the threaded cross member which helped make it simple. The hardest part was torquing the right side unless you have a wobble socket. I have noticed less wheel hop since I installed the brace. I recommend his brace to all my fellow gear heads.

 

Was the absolute first mod I did on my Charger HC when I picked it up 2 months ago.Completely worth it for the peace of mind.

 

Amazing product... fun to install and it works What more do you want?

Also got some stickers out of the deal

And, Bray was one of the easiest vendors to deal with!

 

Definitely getting one soon, i heard alot of good comments and i didnt hear any bad ones on your procduct keep up the good work!