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Stop Exhaust Sag and Rattle for Good
Stock rubber exhaust hangers soften and stretch out over time, letting the exhaust system sag, rattle against the chassis, and transmit extra vibration into the cabin. The PERRIN PSP-EXT-750 kit replaces all four factory rubber hangers with a stiffer polyurethane blend rated at 75a durometer versus the OEM 55a rating, keeping the exhaust locked in position without adding noticeable NVH.
Key Features
- Direct bolt-on replacement for all four factory rubber exhaust hangers
- High durometer polyurethane blend (75a) resists sagging and stretching far longer than OEM rubber
- Standard length profile matches factory exhaust hanger position
- Reduces exhaust rattle and chassis contact caused by worn factory hangers
- PSP-EXT-750 install takes under 30 minutes with basic hand tools
- Sold as a complete 4-piece kit, no cutting or drilling required
Fitment
| Year Range | Make | Model |
|---|---|---|
| 2002-2007 | Subaru | WRX/STI |
| 1993-2007 | Subaru | Impreza |
| 1998-2007 | Subaru | Forester |
Specifications
| Detail | Value |
|---|---|
| Part Number | PSP-EXT-750 |
| Brand | PERRIN Performance |
| Material | Polyurethane, 75a durometer |
| Hanger Count | 4 |
| Length | Standard |
| Color | Black |
| UPC | Not published by manufacturer |
What's Included
- 4 PERRIN polyurethane exhaust hangers
- Installation instructions
About PERRIN Performance
PERRIN Performance designs and manufactures performance and dress-up parts for Subaru, Toyota, and Scion platforms out of Hillsboro, Oregon. The brand is known for CNC-machined aluminum components, polyurethane suspension and exhaust hardware, and a focus on daily-driver durability alongside track-ready performance.
FAQ
What is the PSP-EXT-750?The PSP-EXT-750 is a PERRIN Performance polyurethane exhaust hanger kit that replaces the four factory rubber hangers on 2002-2007 Subaru WRX/STI, 1993-2007 Impreza, and 1998-2007 Forester models. It uses a firmer 75a durometer polyurethane blend to reduce exhaust sag and movement compared to worn OEM rubber.
Will these hangers fit my exhaust system if I have an aftermarket catback?Yes, these hangers mount to the factory hanger locations on the chassis and exhaust, so they work with most aftermarket catback and axle-back systems that retain the stock hanger spacing.
Do PERRIN exhaust hangers add extra vibration or noise inside the cabin?No, PERRIN engineered the 75a durometer blend specifically to firm up the mounting without introducing additional noise, vibration, or harshness over the factory rubber hangers.
How long does it take to install the PSP-EXT-750 kit?Most installs take under 30 minutes with basic hand tools since the kit is a direct swap for the factory hanger locations, with no cutting, drilling, or welding needed.
Are all four hangers in the PSP-EXT-750 kit the same size?The kit includes four standard length hangers sized to match the factory mounting points on the covered WRX/STI, Impreza, and Forester chassis.
Why do OEM rubber exhaust hangers fail over time?Factory rubber hangers are rated at a softer 55a durometer, which breaks down from prolonged heat exposure and road conditions, causing the exhaust to sag and contact the chassis or bumper.
Does the PSP-EXT-750 kit work on 2008 and newer WRX/STI models?No, this standard length kit is designed for 2002-2007 WRX/STI, 1993-2007 Impreza, and 1998-2007 Forester. Later WRX/STI generations use a different hanger count and PERRIN offers separate kits for those model years.
Can I mix the PSP-EXT-750 with long length PERRIN hangers?Yes, some owners combine standard and long length PERRIN hangers at specific mounting points to fine-tune exhaust clearance from the bumper, though the PSP-EXT-750 kit itself is all standard length.
Install Instructions
- Raise and safely support the vehicle, allowing the exhaust system to hang freely
- Locate each factory rubber exhaust hanger at the chassis and exhaust mounting points
- Remove the old rubber hanger from both the chassis bracket and the exhaust hanger pin
- Stretch the new PERRIN polyurethane hanger over the chassis bracket first
- Align the exhaust hanger pin with the open end of the polyurethane hanger and press into place
- Repeat for all four hanger locations
- Lower the vehicle and inspect exhaust clearance from the chassis and bumper
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