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02-07 WRX & STI Borla Catback Exhausts

Borla Hush Twin-Tip Catback Exhaust

The Borla Hush catback exhaust for the WRX & STI features 3" piping with a resonator and quiet twin-tip muffler. This is an exceptionally quiet exhaust for the WRX & STI. The section of the catback that bolts to the downpipe is slip-fit, and can be replaced with the 3" adapter for future upgradability. The downpipe section Borla includes will bolt perfectly to your stock downpipe, but the optional 3" adapter simply bolts on and removes the bottle neck if you plan to use a 3" downpipe. Backed by Borla's million mile warranty, and constructed of stainless steel -- this is an excellent choice for your WRX or STI.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
Borla Hush Twin-Tip Catback 140053 $815.02 $679.18 5 available
Borla 3" Adapter for XR-1 & Hush 00003 $61.74 $51.45 5 available
Blox Racing 3" Adapter BXEX-30100-1/2 $48.00 $40.00 Out of Stock: Call for ETA
Borla XR-1 Single-Tip Catback Exhaust

Borla's XR-1 WRX & STI catback exhaust features 3" piping with Borla's patented XR-1 multi-core muffer for optimal flow. This system does not use a resonator like the Hush, so it has a deep, powerful tone. The section of the catback that bolts to the downpipe is slip-fit, and can be replaced with the 3" adapter for future upgradability.The downpipe section Borla includes will bolt perfectly to your stock downpipe, but the optional 3" adapter simply bolts on and removes the bottle neck if you plan to use a 3" downpipe. Backed by Borla's million mile warranty, and constructed of stainless steel -- this is a great performing catback for your WRX or STI.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
Borla XR-1 Single-Tip Catback 140075 $847.15 $705.96 2 available
Borla 3" Adapter for XR-1 & Hush 00003 $61.74 $51.45 5 available
Blox Racing 3" Adapter BXEX-30100-1/2 $48.00 $40.00 Out of Stock: Call for ETA
Borla Aggressive 2.5" Catback Exhaust

Borla's "Aggressive" catback exhaust for the WRX & STI features 2.5" diameter piping, no resonators, and a straight through muffler for improved performance and sound for mildly modified & stock cars. This exhaust is designed to mate perfectly to a stock downpipe, and, unlike the Hush and XR-1, cannot be upgraded with the 3" adapter so keep this in mind; if you're planning on changing out the stock downpipe for a full 3" piece, it will be difficult to mate this exhaust to it. This system is designed for the end-user that wants some more sound and power but isn't planning on heavily modifying their WRX or STI. This system is stainless steel and backed by Borla's million-mile warranty.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
Borla 2.5" Single Tip Catback 14978 $722.92 $602.43 1 available
3" Adapter for Borla Hush & XR-1 Catback Exhausts

This 3" adapter is designed for the XR-1 & Hush catback exhausts which have a slip-on downpipe connector. The 3" adapter simply slips into place and clamps down to replace the taper in these catbacks and convert them to full 3" exhausts.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
Borla 3" Adapter for XR-1 & Hush 00003 $61.74 $51.45 5 available
Blox Racing 3" Adapter

The Blox Racing 3" adapter is designed to be used on the Borla Hush or XR-1 exhaust system and will effectively convert the system to full 3" instead of tapering to 2.5" right before the downpipe.


  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007
Description Part # MSRP Price Inventory  
Blox Racing 3" Adapter BXEX-30100-1/2 $48.00 $40.00 Out of Stock: Call for ETA
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510 Hyde Park
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18902

Tel: 215.489.2820
Fax: 215.489.2826