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Reinforce the differential mounting system with a Per4mance Development rear differential brace kit matched to the applications and configuration notes below. Confirm year, make, model, engine, drivetrain, differential housing, mounting position, exhaust clearance, selected variant, and current manufacturer instructions before ordering.
Key Features
- Two-piece rear differential reinforcement system
- CNC-machined T-6061 billet aluminum
- OEM-style bushing integration and tool-less inserts
- Compatible with stock and most aftermarket exhaust systems including Borla
Fitment
| Years | Make | Model | Application Notes |
|---|---|---|---|
| 2015-2023 | Chrysler | 300 | V8 rear-wheel-drive applications |
| 2015-2023 | Dodge | Challenger | V8 rear-wheel-drive applications including Demon 170 |
| 2015-2023 | Dodge | Charger | V8 rear-wheel-drive applications |
Specifications
| Brand | Per4mance Development |
|---|---|
| Manufacturer Part Numbers | P4D-DIRS-R |
| Product Type | Rear Differential Brace Kit |
| Fitment Type | Vehicle Specific |
| Application Requirement | Rear position. Intended for V8 rear-wheel-drive vehicles, including the 2023 Challenger SRT Demon 170 application. |
| Condition | New |
What's Included
DIRS-R two-piece rear brace assembly, bushing integration, inserts, required hardware, and manufacturer installation information.
About Per4mance Development
Per4mance Development engineers and manufactures differential-reinforcement systems for selected modern Mopar and Jeep performance applications, with designs focused on mounting support, controlled movement, service access, and street or track use.
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Frequently Asked Questions
Will this rear differential brace kit fit my 2015-2023 Chrysler 300?
That year, make, and model range is listed, but the vehicle must also match this requirement: V8 rear-wheel-drive applications. Check every additional application note before ordering.
Will this change drivetrain noise or vibration?
A properly installed brace is designed to support the differential while retaining controlled movement where the kit uses an OEM-style or rubber bushing. Existing mount wear, incorrect torque, interference, or a mismatched application can still cause noise or vibration.
Does installation require drilling or exhaust removal?
Requirements depend on the exact brace and vehicle. Rear position. Intended for V8 rear-wheel-drive vehicles, including the 2023 Challenger SRT Demon 170 application. Review the current manufacturer instructions before disassembly and verify all clearances after installation.
Installation Instructions
Use the current Per4mance Development instructions for the selected part number. Support the vehicle safely, verify the differential, crossmember, bushing, thread, exhaust, and mounting configuration, replace required one-time-use hardware, apply thread treatment only where specified, torque every fastener to the published value, and check service access and clearance before road testing.
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