Per4mance Development Differential Integration & Reinforcement System for 15-Current Challenger, Charger & 300 5.7/6.2/6.4L RWD - P4D-DIRS

Product Code: P4D-DIRS
(5 reviews) Write a Review
Usually Ships in 24 to 48 Hours
High Horse Performance is Veteran Owned & Operated
Differential Integration and Reinforcement System

New transformative product from Per4Mance Development
New Option Available for Borla Exhaust Systems as well.
Will not work with AFE exhausts.
Starting in January 2019, P4D decided to take a fresh look at the differential brace taking into consideration what has worked and what could be improved. Working with a new mechanical engineer, we started with a blank sheet of paper.

Our goal was two fold:
1) Could we develop a better solution?
2) Could a new solution be more harmonious with the OEM IRS?

This led us to develop a two-piece differential integration and reinforcement system.

- Part one attaches the differential using the lower two main case bolts and the three lower case bolts to reinforce the differential.
- Part two attaches to the rear cross-member and carries a OEM differential bushing (just like the two in the rear cross-member) to add a third, triangulated integration point to "attach" to the reinforced differential.


- American made and CNC machined T-6061 billet aluminum
- OEM differential bushing
- ARP fasteners/US made galvanized bushing bolt
- P4D tool-less PEM inserts for cross-member attachment
- Hard anodized coating in black (images are of preproduction units)
- Access to fill and drain plugs

100% satisfaction guarenteed, return within 30 days of receipt for a full refund.

As a new product, expect product delivery between 4-8 weeks. Orders will be fulfilled in the sequence orders are received.

Use of the DIRS may impact the manufacturer's warranty on the differential. Purchaser assumes all responsibility for installation and use.


2015+ Dodge Challenger

2015+ Dodge Charger

2018 Dodge Demon

2019+ Dodge Redeye

2015+ Chrysler 300

5 Reviews Hide Reviews Show Reviews

  • 5

    Posted by ERNIE ALANIS on Dec 15th 2022

    Brace works great. makes your rear suspension a bit more stiff especially if you have both braces front and rear. Money well spent.

  • 5
    Diff Brace

    Posted by Jon Troiano on Feb 9th 2022

    Nice fit and finish.

  • 5
    Parts arrived quickly and very well packed.

    Posted by Mark Itzstein on Dec 13th 2021

    I love well machine parts that are made stronger than required. This fits the bill.

  • 5
    great item.

    Posted by Dwayne Morales on Jul 17th 2021

    This item is outstanding, it's kind of easy to install. It controlled 95% of the wheel hop, you still need to upgrade the rear suspension. Very satisfied with the item and the wheel hop issue.

  • 5
    Keep your diff in one piece...

    Posted by Ed Serauskis on Apr 2nd 2021

    At times depending upon traction on my M6 Hellcat I would get some wheel hop, since installing it , it feels more planted and as the weather is getting warmer traction is getting good... Haven’t noticed a hop yet and that’s great the machining is excellent in fit and finish, not a hard install great insurance and piece of mind.