MBRP S5259AL 4" Cat Back
- 4 inch cat-back, single exhaust
- Aluminized steel, fully sealed tubing
- Bolt-on, no welding, direct fit to OEM hangers
- Clamps and parts included
- 3 year warranty
- 55 pounds item weight
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A bolt-on aluminized steel cat-back from MBRP's Installer Series, with mandrel bent tubing and a single outlet. The listing never names the vehicle, so confirm fitment.
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ASIN: B00WKKH6WIModel: S5259ALCategory: Cat-Back Systems
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Overview
A truck owner who wants a louder and freer-flowing exhaust gets a single cat-back run in aluminized steel with sealed seams. Direct fit to the original hangers means no welding, and a milled exterior finishes it.
Installer Series is built to the same specifications as the maker's higher line while using a sealed tube that resists rust at the seam. Vehicle details are missing, and the listing leans on marketing claims rather than figures.
Who it's for
Home installers who want a no-weld job on a listed truck and a tuned sound. Anyone who cannot verify the application should ask before ordering.
Pros and cons
- Aluminized steel resists rust
- Fully sealed tubing seams
- Mandrel bent tubing
- Direct fit to OEM hangers
- Vehicle not named in the data
- Single outlet only
- Heavy to handle
Performance notes
Mandrel bending holds tube diameter constant through the curves, and the vehicle-specific muffler is tuned for sound and flow. The listing makes fuel economy and power claims but gives no dyno figures.
Specifications
| Brand | MBRP |
|---|---|
| Model | S5259AL |
| System type | Cat-back, single exhaust |
| Material | Aluminized steel |
| Item weight | 55 pounds |
| Exterior | Milled |
| Warranty | 3 Year Warranty |
Frequently asked questions
How long does it take to install the MBRP S5259AL?
The description calls it a bolt-on, no weld job of roughly one and a half to two hours.
Do I need to weld anything?
No. It is a no-weld design that bolts to the OEM hangers.
Are clamps included?
Yes, the description says you get all the clamps and parts needed.
Which vehicle does the S5259AL fit?
The listing says truck but does not name the model, so confirm the application.