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Milltek Cat Back Performance Exhaust (Non Resonated) – Audi RS6 C6 4F

Milltek Cat Back Performance Exhaust (Non Resonated) – Audi RS6 C6 4F

Milltek Sport Performance Exhaust (2.75″ Non-resonated Cat-Back System Black Satin Dual-Oval Tip) for Audi RS6 C6 (4F) Milltek Sport are manufacturers of Performance Exhaust Systems. Over 30 years of continuous exhaust development and technical expertise are drawn upon to develop the Milltek Sport range of performance products, offering an ever-expanding comprehensive selection of performance exhausts. This has placed Milltek Sport at the forefront of tuning companies and at the top of owners ‘must have’ list. Hand crafted in the UK from premium materials Pipe diameter: 69.85mm (2.75”) Tail pipe design: Ceramic-coated Black Satin Dual-Oval Trims Non-resonated (Louder) design Milltek part number: SSXAU603View more

from $1577.16

2 retailers

Nissan Skyline R32 Shotgun Cat Back Exhaust System

Nissan Skyline R32 Shotgun Cat Back Exhaust System

Fitting a cat-back exhaust is a quick, easy and cost-effective way of releasing more power from Japspeed car’s engine. This is due to the standard restrictive system being replaced with a more free-flowing system with a larger bore. Japspeed Shotgun systems have a 3 inch bore all the way through but, instead of utilising a traditional style back box, the pipe splits into a twin 3 inch shotgun style arrangement. Loud, obnoxious and undoubtedly cool, Japspeed Shotgun systems are perfect those who want to stand out. Features: -Manufactured from T304 stainless steel -3 inch bore with twin 3 inch shotgun style rear -section -Two piece, unsilenced system -TIG welded, CNC machined flanges -Gaskets and bolts included Fits: Nissan Skyline R32 GTS-T & GTR models.View more

$293.96

1 retailer

Nissan 350Z Z33 Exhaust Downpipe Y-Pipe

Nissan 350Z Z33 Exhaust Downpipe Y-Pipe

Japspeed Nissan 350Z Y-Pipe replaces the standard, complex Y-pipe with a single piece, 2.25 inch bore T304 stainless steel item. It also includes a pair of flexi joints to help reduce noise resonance without sacrificing performance. Features: -Manufactured from T304 stainless steel -58mm – 60mm Bore -Includes two flexi joints -Mirror polished finish Fits: Nissan 350Z 2003-2006.View more

$241.57

1 retailer

Subaru Impreza WRX STI New Age Centre Section Decat Pipe

Subaru Impreza WRX STI New Age Centre Section Decat Pipe

Japspeed Subaru Impreza New Age Centre Section Decat Pipe replaces the standard centre section that also includes a restrictive catalytic converter. Japspeed pipe removes the catalytic converter and replaces the pipe with a high flow, stainless steel 2.5inch bore item. Features: -Manufactured from T304 stainless steel -2.5inch bore -TIG welded, CNC machined flanges -Compatible with standard or aftermarket back box Please note: 1258mm length. Please check length of Japspeed current centre section before ordering. Fits:  Subaru Impreza GD New Age (2001-2005) turbo models only.View more

$139.32

1 retailer

Subaru Impreza New Age Non-Turbo Decat Exhaust Centre Section

Subaru Impreza New Age Non-Turbo Decat Exhaust Centre Section

Japspeed Subaru Impreza New Age Non Turbo Centre Section Decat Pipe replaces the standard centre section that also includes a restrictive catalytic converter. Japspeed pipe removes the catalytic converter and replaces the pipe with a high flow, stainless steel section. Features: -Manufactured from T304 stainless steel -TIG welded, CNC machined flanges Fits: Subaru Impreza GD New Age Sport (Non Turbo, 2001-2005) models.View more

$139.32

1 retailer

Subaru Impreza WRX STI Classic Exhaust Centre Section Decat Pipe

Subaru Impreza WRX STI Classic Exhaust Centre Section Decat Pipe

Japspeed Subaru Impreza Classic GC8 Centre Section Decat Pipe replaces the standard centre section that also includes a restrictive catalytic converter. Japspeed pipe removes the catalytic converter and replaces the pipe with a high flow, stainless steel 2.5 inch bore item. Features: – Manufactured from T304 stainless steel – 2.5 inch bore – TIG welded, CNC machined flanges – Compatible with standard or aftermarket back box Please note: 1350mm length. Please check length of Japspeed current centre section before ordering. Fits: Subaru Impreza Classic GC8 (1993-2001) models.View more

$139.32

1 retailer

Nissan R35 GTR 3" Titanium Y-Pipe Back Exhaust System

Nissan R35 GTR 3" Titanium Y-Pipe Back Exhaust System

Japspeed Nissan R35 GTR Y-Pipe Back Exhaust System directly replaces Japspeed OEM or stainless steel aftermarket system to give Nissan supercar the voice it was always meant to have. Replacing the complete exhaust from and including the Y-Pipe to the tailpipes allows the exhaust gasses to flow much more freely, increasing the power output of the engine while the titanium construction reduces weight compared to OEM or conventional stainless steel equivalents. Manufactured from titanium (with stainless steel flexi joints) Japspeed Nissan R35 GTR Titanium Y-Pipe Back Exhaust System is the next level in aftermarket performance exhaust parts. Stronger yet lighter than steel, titanium construction ensures this system is able to take an incredible amount of abuse (as is normal when driving a GTR as intended). Fitting a titanium system over the OEM or stainless steel equivalent helps significantly reduces the overall vehicle weight. By reducing the weight of the exhaust system the power-weight ratio of the car dramatically improves; allowing you to push harder than ever with confidence into those corners Extremely lightweight (weighing in at only 12kg) and featuring a full 3 inch bore Japspeed Nissan R35 GTR Titanium Y-Pipe Back Exhaust System is designed to maximise the performance...View more

$2428.49

1 retailer

Nissan R35 GTR 3.5" Turbo Back Valvetronic Exhaust System With 5" Tailpipes

Nissan R35 GTR 3.5" Turbo Back Valvetronic Exhaust System With 5" Tailpipes

This is a 3.5 inch (88mm) bore decat system featuring Japspeed choice of either carbon fibre or titanium effect tailpipes (4 x 5 inch Round (125mm)). As an added extra this exhaust is also available with a fully remote controlled Valvetronic vacuum valve system. Ideal for both the loud, obnoxious and undoubtedly awesome times on track when you can really let that GTR roar and those times when a little more subtlety is key. The Valvetronic system makes that possible! No matter which option you choose this package is a powerful, big bore, performance exhaust including decats, centre and rear sections right through to those awesome huge tailpipes. While not generally road legal (due to MOT failure from decat), this exhaust system has proven popular in racing circles, boasting fantastic power gains as well as enhanced sound. A treat for the eyes and ears. Features: Manufactured from T304 stainless steel 3.5 inch bore with 4 x 5 inch tailpipes Decat system TIG welded, CNC machined flanges Gaskets and bolts included Optional remote controlled Valvetronic vacuum valve system Noise Level: Sound recordings for this system have been recorded statically at 3000rpm Valves Closed: 78dB Valves Open: 84dB Fits: Nissan R35 GTR 2008-2015View more

$3015.16

1 retailer

Honda Civic EK 1996-2000 Skunk2 Exhaust System (B Series)

A properly designed exhaust system is critical to engine performance. Skunk2’s 70mm MegaPower Exhaust system for ’96-’00 Civic CX and DX hatchbacks featuring  B-series engine swaps was developed with this in mind and is based off of more than 15 years’ worth of racing experience. Dyno-proven for maximum horsepower, MegaPower R cat-back systems are constructed of T-304 stainless steel, are robotically TIG welded, and feature CNC mandrel bends for a precise fit. Designed for naturally aspirated engines featuring higher compression, aggressive camshafts, and racing headers as well as for mild turbocharged applications that require more exhaust flow than Skunk2’s 60mm MegaPower Exhausts provide, MegaPower R Exhausts allow engines to breathe more efficiently and produce more power thanks to larger diameter piping. MegaPower R Exhaust systems were designed for maximum flow and power, featuring oversized tubing and mufflers, which results in a significantly louder tone when compared to 60mm MegaPower systems. Featuring Japanese-spec, Super N1 styling, MegaPower R Exhaust systems generate more horsepower by optimizing engine airflow and volume through carefully selected, application-specific tubing lengths and diameters and increased wave scavenging effects for more horsepower. CNC mandrel bending allows for a constant tubing diameter throughout the bend, which results in precise...View more

$695.30

1 retailer

Scorpion Resonated Cat-Back Exhaust – with Single Polished Daytona Tailpipe

Scorpion Resonated Cat-Back Exhaust – with Single Polished Daytona Tailpipe

A Scorpion Cat Back Exhaust System is a good compromise between performance gains and ease of fitting, swapping out the original components from the catalytic converter back. The systems generally replace secondary catalytic converters where fitted. Some systems may go from the secondary catalyst back where necessary and these are described as Secondary Cat-Back Exhaust System.This in combination with Scorpions exhaust design know-how helps increase power through increased flow-rate and reduced back pressure but leaves primary catalytic converters in place so the car remains road legal and will pass MOTs. Made using precision mandrel worked aircraft grade T304 steel. This is the highest standard steel used for automotive parts and offers excellent corrosion resistance and thermal properties. Scorpion offer a lifetime guarantee for the original purchaser on all their exhaust systems.Scorpion supply their back-boxes with one of their range of tailpipes to suit the vehicle:STW Tailpipes: twin slash cut round tailpipes, sized accordingly to applicationBoxer Tailpipe: single inward rolled, slash-cut rectangular oval tailpipeDaytona Tailpipe: round inner-taper tailpipe, sized accordingly for each applicationEvo Tailpipe: single inward rolled oval tailpipe, 114mm x 87mmEvo R Tailpipe: single inward rolled oval tailpipe, 155mm x 100mmImola Tailpipe: single inward rolled round tailpipe, sized accordingly for each...View more

$590.51

1 retailer

Scorpion Resonated 2.5 Cat-Back" – Twin 110mm Daytona Tailpipes to Suit Zetec-S Rear Valance

Scorpion Resonated 2.5 Cat-Back" – Twin 110mm Daytona Tailpipes to Suit Zetec-S Rear Valance

A Scorpion Cat Back Exhaust System is a good compromise between performance gains and ease of fitting, swapping out the original components from the catalytic converter back. The systems generally replace secondary catalytic converters where fitted. Some systems may go from the secondary catalyst back where necessary and these are described as Secondary Cat-Back Exhaust System.This in combination with Scorpions exhaust design know-how helps increase power through increased flow-rate and reduced back pressure but leaves primary catalytic converters in place so the car remains road legal and will pass MOTs. Made using precision mandrel worked aircraft grade T304 steel. This is the highest standard steel used for automotive parts and offers excellent corrosion resistance and thermal properties. Scorpion offer a lifetime guarantee for the original purchaser on all their exhaust systems.Scorpion supply their back-boxes with one of their range of tailpipes to suit the vehicle:STW Tailpipes: twin slash cut round tailpipes, sized accordingly to applicationBoxer Tailpipe: single inward rolled, slash-cut rectangular oval tailpipeDaytona Tailpipe: round inner-taper tailpipe, sized accordingly for each applicationEvo Tailpipe: single inward rolled oval tailpipe, 114mm x 87mmEvo R Tailpipe: single inward rolled oval tailpipe, 155mm x 100mmImola Tailpipe: single inward rolled round tailpipe, sized accordingly for each...View more

$685.09

1 retailer

Scorpion Resonated 2.5 Cat-Back" – Twin 110mm Daytona Tailpipes to Suit ST180 Rear Valance

Scorpion Resonated 2.5 Cat-Back" – Twin 110mm Daytona Tailpipes to Suit ST180 Rear Valance

A Scorpion Cat Back Exhaust System is a good compromise between performance gains and ease of fitting, swapping out the original components from the catalytic converter back. The systems generally replace secondary catalytic converters where fitted. Some systems may go from the secondary catalyst back where necessary and these are described as Secondary Cat-Back Exhaust System.This in combination with Scorpions exhaust design know-how helps increase power through increased flow-rate and reduced back pressure but leaves primary catalytic converters in place so the car remains road legal and will pass MOTs. Made using precision mandrel worked aircraft grade T304 steel. This is the highest standard steel used for automotive parts and offers excellent corrosion resistance and thermal properties. Scorpion offer a lifetime guarantee for the original purchaser on all their exhaust systems.Scorpion supply their back-boxes with one of their range of tailpipes to suit the vehicle:STW Tailpipes: twin slash cut round tailpipes, sized accordingly to applicationBoxer Tailpipe: single inward rolled, slash-cut rectangular oval tailpipeDaytona Tailpipe: round inner-taper tailpipe, sized accordingly for each applicationEvo Tailpipe: single inward rolled oval tailpipe, 114mm x 87mmEvo R Tailpipe: single inward rolled oval tailpipe, 155mm x 100mmImola Tailpipe: single inward rolled round tailpipe, sized accordingly for each...View more

$768.17

1 retailer

The Composition and Functionality of an Automotive Exhaust System

When a car runs, it generates fumes due to the combustion of fuel. The exhaust is responsible for directing that gas away from the vehicle's passenger side. A car's exhaust is one of its critical components because it facilitates the optimal functioning of the engine. One must ensure that this system stays in good condition at all times, and that means replacing it when it fails.

Proper working exhaust systems are not just good for cars, but the environment as well. The gases released after combustion are toxic and must, therefore, be disposed of correctly. Exhaust pipes keep the air inside a car safe to breathe for the occupants. For this reason, a driver should learn how the exhaust accomplishes this and how to tell when something is not working right.

What it Entails

The automotive exhaust is made up of several linked pipes that provide a clear path for the combustion fumes. They run from the engine to the back of the car. These pipes are sized and shaped differently because each one is fitted on a section of the vehicle's underside.

Exhaust pipes also have to be designed around other parts that are located in the same section of the vehicle like the axles. Different car models and makes will have varying exhaust layouts due to the differences in their builds. The functionality remains the same, though.

A logical question when examining the exhaust pipes of a car is - why not have a single component rather than several pieces? For one, it simplifies the production process. If one pipe were to run from the engine bay to the back, then it would have to be bent at several points, which is tedious work.

It is more practical to have individual pieces that are already shaped appropriately. Another plus point of having multiple pipes is that a car owner can replace just one. If only part of the system is worn out like the oxygen sensor or catalytic converter, then it's more efficient to replace just that. Of course, you can get full exhaust systems in instances when a complete overhaul is necessary.

The Different Parts of an Exhaust

The first component of this system is the exhaust manifold, which is the pipe that links to the cylinder head and transports the fumes from the engine. Usually manufactured from cast metal, the exhaust head has openings that connect with the exhaust ports on the engine. It has flanges that wrap around the ports, forming a seal that keeps the gases from escaping. At the end of the manifold is a single opening where the fumes come out.

An oxygen sensor is integrated into the exhaust manifold or the exhaust pipe and is a standard feature in modern cars. Its role is to detect the level of oxygen contained in the exhaust. This information helps to calculate the amount of fuel required for a balanced air-fuel mix. The computer then adds or subtracts fuel accordingly, which promotes fuel economy.

As the fumes travel through the system, they pass through the catalytic converter, which is a pipe that resembles a muffler. It is responsible for converting the hydrocarbons and carbon monoxide in the fumes into CO2 and water with some converting nitrogen oxides as well. The degree of conversion depends on the type of converter. Catalytic converters are made with metals such as rhodium, platinum and palladium on the inside, so when the toxic gases pass through, they interact with them and become less harmful. A catalytic converter is an efficient approach to reducing environmental pollution.

The muffler, which is designed like a chamber, reduces combustion noises. The reaction from burning air and fuel causes explosions that can be deafening without a muffler. This part consists of several tubes and chambers that are laid out intricately. The design has to cancel out the noises while letting the fumes pass. A muffler has several layers of metal, including an insulated one to help absorb the loud sounds. The component takes a lot of pressure, which is why it has to be highly resistant to corrosion, shock and heat, among other environmental factors.

The final piece in the system is the exhaust pipe, which directs the gases out of the tailpipe at the end of the car's underside. Steel is a common choice for this component, but some carmakers use stainless steel. Corrosion is the biggest threat to the exhaust pipes, and that is why some car owners opt to have aluminised steel because it has a higher resistance to corrosive builds.

All of the systems are held together by flanges, gaskets, clamps and hangers. The pipes need fastenings to connect different pieces and hang the entire system from the underbody of the vehicle. Cars need fully functional exhaust systems to keep up with the required emission standards. Emission tests and extensive inspections are necessary to ensure that all systems are intact.