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 Borla Cat-Back Exhaust 2002-07 WRX and STI
This cat-back from Borla combines excellent workmanship with Borla's signature sound, and it's a great value. Plus, it's warranteed for a million miles! (After that, you're on your own.) All 304 stainless steel construction, with 2.5" mandrel-bent piping, a tasteful polished rolled tip, and a nice burble tone that's deep and authoritative. (We measured 85 db at idle, 97 db at 3,000 rpm.) Fits all '02-07 WRX, including STi.
Need even higher flow capacity? The new STi system features full 3" mandrel-bent piping, and an XR-1 high-flow muffler. It also fits all '02-07 WRX, including (of course!) STi.
Like all Borla systems, the front of this cat-back has a donut gasket receiver, so it's a perfect fit to your factory downpipe. If you want to attach it to an aftermarket flat-flange downpipe and have a full 3" system all the way through, purchase the 3" downpipe adapter accessory.
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| Borla 2.5in 02-07 WRX Cat-Back Exhaust2.5" piping
| | | Borla 02-07 WRX /STi Cat-Back Exhaust3" piping
| | |  3" Downpipe AdapterUse this adapter to fit a flat-flange downpipe to a Borla cat-back, or use it anywhere else there's a need for a flat flange with a little hunk of stainless 3" tubing neatly TIG-welded on.
| | | Borla exhaust movie with sound- Click to view! (3.2 MB)2.5" system. (Sound is a little soft; turn volume up to hear it.)
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