Free UPS Ground Continues for the Month of June!
Exhaust Leaks are a Thing of The Past, especially with the GrimmSpeed Stock Downpipe to 3inch Exhaust Adapter. When installing a new cat back exhaust, exhaust leaks are a super common problem especially on the 2015-2020 Subaru WRX and STI’s. The most common issue we hear about is from running an OEM downpipe with an aftermarket 3” cat back exhaust without a proper adapter. Use this adapter to allow you to keep your stock donut gasket for the best solution to finally put an end to that pesky leak.
CNC machined from mild steel and zinc coated for durability and longevity, this thing will outlast your car. Don't waste your time trying to get your OEM downpipe to seal without a donut gasket. In a short amount of time, they rust and corrode and will prevent you from ever getting a good seal with a typical flat gasket. Re-use your stock donut gasket along with a GrimmSpeed 2x Thick 3" Gasket (included) for a perfect seal on the first try! A final solution to pesky problems, it's what you can expect from GrimmSpeed.
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