Circuit Werks

744 products ★ 4.4

Since 1999, we've been driving excellence in the Automotive Performance Industry. Backed by decades of experience, we deliver only the highest quality performance parts.

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2008-2015 Mitsubishi Evolution 10 EVO X 3" Test Pipe w/ CEL FIX

2008-2015 Mitsubishi Evolution 10 EVO X 3" Test Pipe w/ CEL

USD 199.99
00-04 Porsche Boxster 986 2.7/3.2 Straight Test Pipes

00-04 Porsche Boxster 986 2.7/3.2 Straight Test Pipes

USD 219.99
00-04 Porsche Boxster 986 2.7/3.2 Circuit Werks Resonated Test Pipes Frontpipes Midpipes

00-04 Porsche Boxster 986 2.7/3.2 Circuit Werks Resonated Te

USD 399.99
00-09 Honda S2000 AP1 AP2 63mm Test Pipe Cat Delete

00-09 Honda S2000 AP1 AP2 63mm Test Pipe Cat Delete

USD 119.99
1997-1999 Porsche Boxster 2.5L 986 Secondary Straight Test Pipes

1997-1999 Porsche Boxster 2.5L 986 Secondary Straight Test P

USD 249.99
13-26 Subaru BRZ, Scion FRS, Toyota FT86 GT86 GR86 Straight Front Pipe Cat Delete

13-26 Subaru BRZ, Scion FRS, Toyota FT86 GT86 GR86 Straight

USD 249.99
2013-2026 Subaru BRZ Scion FRS FR-S FT86 GT86 GR86 DUAL RESONATED Catless Front Test Pipe

2013-2026 Subaru BRZ Scion FRS FR-S FT86 GT86 GR86 DUAL RESO

USD 239.99
1997-1999 Porsche Boxster 2.5L 986 Secondary Resonated Test Pipes

1997-1999 Porsche Boxster 2.5L 986 Secondary Resonated Test

USD 194.99
2003-2006 Infinity G35 Anti-Reversion Cat Delete Test pipes

2003-2006 Infinity G35 Anti-Reversion Cat Delete Test pipes

USD 179.99
2000-2004 Porsche Boxster 986 2.7/3.2L High Flow Catted Test Pipes

2000-2004 Porsche Boxster 986 2.7/3.2L High Flow Catted Test

USD 399.99
2002-2007 Porsche 955 Cayenne Turbo/Turbo S Straight Lower Race Test Pipes

2002-2007 Porsche 955 Cayenne Turbo/Turbo S Straight Lower R

USD 749.99
2008-2013 Infiniti G37 Catless Straight Test Pipes

2008-2013 Infiniti G37 Catless Straight Test Pipes

USD 169.99
2008-2015 Mitsubishi Lancer Evolution X EVO X 3″ Resonated Test Pipe

2008-2015 Mitsubishi Lancer Evolution X EVO X 3″ Resonated T

USD 209.99
2003-2006 Nissan 350z Z33 Straight Cat Delete Testpipe

2003-2006 Nissan 350z Z33 Straight Cat Delete Testpipe

USD 179.99
2000-2009 Honda S2000 63mm Resonated Testpipe

2000-2009 Honda S2000 63mm Resonated Testpipe

USD 124.99
03-15 Nissan 350Z Z33 Straight Mid Y-Pipe Exhaust True 2.5" to 3"

03-15 Nissan 350Z Z33 Straight Mid Y-Pipe Exhaust True 2.5"

USD 299.99
2003-2006 Nissan 350z Z33 Anti-Reversion Cat Delete Testpipe

2003-2006 Nissan 350z Z33 Anti-Reversion Cat Delete Testpipe

USD 189.99
2009-2017 Nissan 370z 370 Z Z34 Resonated Catless Test Pipes RTP

2009-2017 Nissan 370z 370 Z Z34 Resonated Catless Test Pipes

USD 199.99
2008-2013 Infiniti G37 Catless Resonated Test pipes

2008-2013 Infiniti G37 Catless Resonated Test pipes

USD 209.99
1997-2004 Porsche Boxster 986 2.5/2.7/3.2 Sport Exhaust Headers/Manifolds

1997-2004 Porsche Boxster 986 2.5/2.7/3.2 Sport Exhaust Head

USD 799.99
2009-2017 Nissan 370z Z34 370 Z Straight Catless Test Pipes

2009-2017 Nissan 370z Z34 370 Z Straight Catless Test Pipes

USD 189.99
03-16 Infiniti G35 G37 Straight Mid Y-Pipe Exhaust True 2.5" to 3"

03-16 Infiniti G35 G37 Straight Mid Y-Pipe Exhaust True 2.5"

USD 299.99
2013-2026 Subaru BRZ Full Dual Mufflered Exhaust System Helmholtz Chamber

2013-2026 Subaru BRZ Full Dual Mufflered Exhaust System Helm

USD 599.99
2003-2006 Nissan 350z Resonated Catless Test Pipes VQ35DE

2003-2006 Nissan 350z Resonated Catless Test Pipes VQ35DE

USD 199.99