2.5 RS INTERMEDIATE PIPE AND MUFFLER $395.00 (Reg $495.00)
Manufactured to improve performance and enhance the exhaust note. A durable stainless steel finish adds a sporty appearance to your Impreza. 2 in stock it is 50 states legal
the piping is a metric size and is around 2.25 inches

http://www.langstonspeed.com/prodpage.cfm?CFID=252438&CFTOKEN=37718108&SubCatID=9
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VF23 - TURBO - $815.00

http://www.langstonspeed.com/prodpage.cfm?CFID=252438&CFTOKEN=37718108&SubCatID=5
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Go Fast Bitz Blow off Valve $195

http://www.langstonspeed.com/proddetail.cfm?CFID=252438&CFTOKEN=37718108&ItemID=65&CategoryID=3

http://www.langstonspeed.com/images/MUSSE033Scatless.jpg

http://www.langstonspeed.com/images/th_suwe037b.jpg

http://www.langstonspeed.com/images/MUSSE127G6Red.jpg