Exhaust
-8%
![Akrapovic Slip-On Race Line (Titanium) (Req Tips / Option 2) - Porsche Cayman GT4 / Boxster Spyder (718) [2020+]](http://www.circuitspecr.com/cdn/shop/products/S-PO-TI-18-1_2__62866_500x500.png?v=1659481850)
![Akrapovic Slip-On Race Line (Titanium) (Req Tips / Option 2) - Porsche Cayman GT4 / Boxster Spyder (718) [2020+]](http://www.circuitspecr.com/cdn/shop/products/S-PO-TI-18-1_1__88429_500x500.webp?v=1659481856)
Akrapovic Slip-On Race Line (Titanium) (Req Tips / Option 2) - Porsche Cayman GT4 / Boxster Spyder (718) [2020+]
-8%
$6,385.00
$6,903.85
Through extensive testing and development, the Akrapovic sound engineers have coaxed a deep, sporty, higher-frequency sound from the 718 GT4 / Spyder's engine, more akin to that of a muscle car, while keeping it smooth...
-8%
Akrapovic Sportback (C8) Link-Pipe Set (SS) - Audi RS6 Avant / RS7 Sportback (2020+)
-8%
$1,355.00
$1,470.24
Through extensive testing and development, the Akrapovic sound engineers have coaxed a deep, sporty, higher-frequency sound from the RS6 / RS7's engine, more akin to that of a muscle car, while keeping it smooth and...
-5%
Akrapovic Evolution Line w/ Header (Titanium) - Porsche 911 GT3/RS 3.8 (2009-2012) - Req 01-08-28-0001
-5%
$13,400.00
$14,096.70
The fully titanium Evolution exhaust system complements the Slip-On muffler and tailpipes with a newly developed exhaust manifold with 100 cpsi sports catalytic convertors that guarantee an increase in power and torque, as do the...
-14%
![Akrapovic Tail Pipe Set (Carbon) - BMW M3 (G80)/M4 (G82) [2021+]](http://www.circuitspecr.com/cdn/shop/products/c711d45b575f9f9866d3f290d2dcbf04__20098_500x500.webp?v=1659481387)
Akrapovic Tail Pipe Set (Carbon) - BMW M3 (G80)/M4 (G82) [2021+]
-14%
$1,680.00
$1,949.03
As the most visible part of an exhaust system, Akrapovic pays the utmost attention to the tailpipes. They have created special hand-crafted carbon-fibre tailpipes to enrich the visual enjoyment of the Slip-On or Evolution exhaust...
-7%
ISR Performance Stainless Steel NON Resonated Mid Section - Nissan Z33 350z (2003-2006)
-7%
$140.00
$150.00
ISR Performance Non Resonated Mid Section for 350Z GT Single or EP Dual exhausts. ISR Performance Non Resonated Mid Section for 350Z is designed to replace your existing 350Z GT Single (Part number IS-GT-350Z) or...
-6%
Skunk2 Racing Mega Power RR Exhaust System - Honda Civic Si Coupe (2006-2011)
-6%
$635.00
$674.09
A properly designed exhaust system is critical to engine performance. Skunk2’s 76mm MegaPower RR Exhaust system for the '06-'11 Civic Si coupe was developed with this in mind and is based off of more than...
-6%
Skunk2 Racing Mega Power RR Exhaust System - Honda Civic Si Sedan (2012-2015)
-6%
$635.00
$674.09
A properly designed exhaust system is critical to engine performance. Skunk2’s 76mm MegaPower RR Exhaust system for the 2012-2015 Civic Si coupe was developed with this in mind and is based off of more than...
-7%
Skunk2 Racing Mega Power Muffler - 3.00" Inlet x 4.50" Outlet - Universal
-7%
$174.00
$187.94
Skunk2’s Universal Mufflers are designed for maximum flow and power, featuring the same high-quality specifications as our more comprehensive Mega Power Exhaust Systems. The J-Spec universal muffler is manufactured of T-304 stainless steel, robotically...
-7%
Skunk2 Racing Mega Power Muffler - 2.25" Inlet x 4.00" Outlet - Universal
-7%
$174.00
$187.94
Skunk2’s Universal Mufflers are designed for maximum flow and power, featuring the same high-quality specifications as our more comprehensive Mega Power Exhaust Systems. The universal muffler is manufactured of T-304 stainless steel, robotically TIG...
-15%
HKS Dual Hi-Power Exhaust System w/ Titanium Tips - Nissan Z34 370Z (2009-2021)
-15%
$1,785.00
$2,100.00
Circuit Spec R proudly carries performance upgrades by one of the biggest names in the industry, HKS. Since 1973, HKS has been a leading innovator in turbocharger technology, and many of their products have been utilized...
-15%
HKS Hi-Power Carbon-Ti Axle Back Exhaust System - Lexus Altezza IS300 (2001-2005)
-15%
$680.00
$800.00
Inspired and designed from endurance and GT racing in Japan, HKS developed its Hi-Power Exhaust system for both turbocharged and naturally aspirated applications. HKS has incorporated this new race inspired offset muffler and piping design...
-15%
MBRP Armor Pro 3.0" Catback Exhaust System - Honda Civic Type R FK8 (2017-2021)
-15%
$1,364.99
$1,605.87
Cruise the highway or hit the track with an MBRP Street Profile exhaust. It’s the perfect mix of aggressive sound when you’re into the throttle without being obnoxious on long drives. Material Specs: T304 Stainless...
-17%
MBRP Armor Pro Dual Catback Exhaust System w/ Burnt Titanium Tips - Toyota A90 Supra 3.0T (2020+)
-17%
$1,944.99
$2,347.05
Cruise the highway or hit the track with an MBRP Street Profile exhaust. It’s the perfect mix of aggressive sound when you’re into the throttle without being obnoxious on long drives. Material Specs: T304 Stainless...
-17%
MBRP Armor Pro Dual Catback Exhaust System w/ Carbon Tips - Toyota A90 Supra 3.0T (2020+)
-17%
$1,999.99
$2,408.81
Cruise the highway or hit the track with an MBRP Street Profile exhaust. It’s the perfect mix of aggressive sound when you’re into the throttle without being obnoxious on long drives. Material Specs: T304 Stainless...
-10%
ISR Performance 2.75" Stainless Steel Exhaust Y Pipe - Infiniti Q60 w/ 3.7L Engine
-10%
$270.00
$300.00
The ISR Performance Y-pipe utilizes 2.75" stainless steel piping along with bellowed flex sections running from the 2 bolt catalytic converter flanges back to the high performance velocity merge. The Y pipe then steps to...
-10%
ISR Performance Stainless Steel Single Exit MBSE Axle Back Exhaust Kit - Infiniti G35 Sedan (2005-2006)
-10%
$337.50
$375.00
RWD MODELS ONLY ISR Performance MBSE Axle back exhaust is a performance muffler replacement exhaust system made of stainless steel to ensure the highest reliability and quality. This large cannister style single exit exhaust gives...
-5%
ISR Performance Series II Non-Resonated Mid Section Only - Nissan 240sx S14 (1995-1998)
-5%
$190.00
$200.00
ISR Performance Interchangeable Resonated Mid Section for SERIES II exhaust systems ** THIS IS THE RESONATED MID SECTION ONLY, NOT COMPLETE EXHAUST SYSTEM** ** ONLY WORKS WITH SERIES II EXHAUST SYSTEMS, WILL NOT WORK WITH...
-10%
ISR Performance Series II Resonated Mid Section Only - Nissan 240sx S14 (1995-1998)
-10%
$225.00
$250.00
ISR Performance Interchangeable Resonated Mid Section for SERIES II exhaust systems ** THIS IS THE RESONATED MID SECTION ONLY, NOT COMPLETE EXHAUST SYSTEM** ** ONLY WORKS WITH SERIES II EXHAUST SYSTEMS, WILL NOT WORK WITH...
-10%
ISR Performance Series II Resonated Mid Section Only - Nissan 180sx 240sx S13 (1989-1994)
-10%
$225.00
$250.00
ISR Performance Interchangeable Resonated Mid Section for SERIES II exhaust systems ** THIS IS THE RESONATED MID SECTION ONLY, NOT COMPLETE EXHAUST SYSTEM** ** ONLY WORKS WITH SERIES II EXHAUST SYSTEMS, WILL NOT WORK WITH...
-5%
ISR Performance Series II Non-Resonated Mid Section Only - Nissan 180sx 240sx S13 (1989-1994)
-5%
$190.00
$200.00
ISR Performance Interchangeable Non Resonated Mid Section for SERIES II exhaust systems ** THIS IS THE NON RESONATED MID SECTION ONLY, NOT COMPLETE EXHAUST SYSTEM** ** ONLY WORKS WITH SERIES II EXHAUST SYSTEMS, WILL NOT...
ISR Performance Multi Layer Exhaust Manifold Gaskets (Pair) - Chevrolet LS Engine
$32.00
ISR Performance GM LS Engine Multi-Layer Steel Exhaust Manifold Gaskets ( Pair) ISR Multi Layer Gasket improves bolt-load retention at elevated temperatures, creating a tight force to seal exhaust pressure produced by LS Engines **...