Catalysts & Replacement Pipes Car Parts

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Scorpion Cat Replacement Pipe

Scorpion Cat Replacement Pipes are designed to fit in place of the original catalytic converter to give free flowing exhaust gases, reducing back pressure and giving increased power, improved reponse and better drivability. Scorpion cat pipes are intended for competition or show use, where the vehicle is not to be used on the road. For road applications we recommend a high flow catalytic converter.View more

Redback 90 Degree Boss Adaptor Suits Mini Catalytic Converter

This 90 degree boss adaptor is designed to allow the Redback Mini catalytic converter to be fitted in confined areas. Dimensions – 45mm Long x 30mm DiameterView more

Cobra Sport De-Cat Pipe

Cobra Sport De-Cat Pipes are designed to fit in place of the original catalytic converter And offer maximum flow to an exhaust system to reduce back pressure And increase performance, offering improved response And better drivability. Cobra Sport De-Cat Pipes are intended for competition or show use, where the vehicle is not to be used on the road. Please note, this image is for illustration purposes only, actual product may differ to item shown.View more

Cobra Sport Sports Catalyst

Cobra Sport sports cats are designed with attention to detail in mind – high quality design and construction for improved performance, sound and stylish looks. The Cobra sports cat do exactly the same as the original cat on your vehicle, removing any harmful gases, but sports cat is less restrictive so are able to give you more power (10%-15%) than the standard cat. All Cobra sports cats are road legal so will not be a problem when your annual MOT is due.View more

Scorpion Secondary Cat Replacement Pipe

Some modern vehicles have more than one catalytic converter to help control emissions on a cold start. Scorpion Secondary Cat Replacement pipes are designed to fit in place of the secondary catalytic converter only improving flow-rate and reducing back pressure but still leaving your primary catalytic converter in place. This offers a performance improvement while leaving your car probably able to pass an emissions test. Note: Please check local regulations before ordering this component. Some regulations (including the MOT manual) don't permit removing any catalytic converters.View more

Scorpion Sports Replacement Catalyst

A Scorpion Sports Replacement Catalysts is designed to remove harmful gases like the original catalytic converter but is designed with a much greater open area insidethe catalyst so as to restrict gas flow less. A higher flow-rate and reduced back pressure will allow the engine to breathe more freely improving performance. The more exhaust gasses you're getting out the more air the engine can breathe in. When combined with a Scorpion performance exhaust system, you really can feel the difference! Unlike catalyst replacement pipes your carremains road legal and will pass MOT emissions tests. There may be a slight increase in noise levels. Manufactured from T304 stainless steel for long life, and every Scorpion part comes with a comprehensive manufacturers warranty. Note: Replacing your Catalytic Converter even with another Catalytic Converter may be against your local emissions regulations. Please check this before ordering this product.View more

Revo Technik Exhaust Downpipe De-Cat

The Revo Exhaust Downpipe is designed to replace the highly restrictive OEM Component. This allows exhaust gases to flow much more freely behind the turbo which increases throttle response and minimises boost lag, helping the engine harness every ounce of power it can produce. These downpipes are made with specific car models in mind, ensuring that it is a perfect fit everytime. With a de-cat pipe for the ultimate in flow-rate, please note that de-cat pipes are not road legal in the UK and should fail an MOT. These downpipes are for Offroad or Show use only. For other markets please check your local regulations before ordering.View more

Piper Sports Catalyst

Piper stainless steel sports cats are designed with attention to detail in mind – high quality design and construction for improved performance, sound and stylish looks. T304 stainless steel construction throughout means that Piper can offer a limited lifetime warranty on all their stainless steel exhaust systems. The Piper sports cat does exactly the same as the original cat on your vehicle, removing any harmful gases. The sports cat is less restrictive so is able to give you more power (10%-15%) than your standard cat. All Piper sports cats are road legal so will not be a problem when your annual MOT is due. Fit a Piper Performance Exhaust System with the peace of mind and knowledge that not only will it perform, sound, and look great, but they are built to last a lifetime. Piper – Power by DesignView more

Mongoose Exhausts Cat Bypass Pipe

Mongoose Exhausts offer a large range of performance exhaust systems to suit a wide range of vehicles. Through extensive testing and development, they have designed systems that not only look great, but improve sound and performance. Manufactured from high grade T304 stainless steel, each system is built to the highest standards so you can be sure of a great fit and long lasting finish and performance. Manufacturers limited lifetime warranty.View more

QuickSilver Performance Cat Replacement Pipes

Quicksilver Exhaust Systems- Superior exhaust systems for the worlds finest cars. Quicksilver Exhaust Systems are a recognised manufacturer of original and 'sports' performance exhaust systems for the Worlds finest classic, prestige and exotic sports cars since 1973. The range of high quality sports systems are manufactured by craftsmen and meticulously developed to improve performance, apearance and sound as well as reducing weight, saving up to 40 kgs against an OE equivalent. Quicksilver replacement pipes are designed to be more free flowing allowing more exhaust gases to pass through meaning therei is less back pressure build up which also gives an increase in power, improved throttle response and better driveability. Image is for illustration purposes only – actual product may differ.View more

Revo Technik Exhaust Downpipe with Catalyst

The Revo Exhaust Downpipe is designed to replace the highly restrictive OEM Component. This allows exhaust gases to flow much more freely behind the turbo which increases throttle response and minimises boost lag, helping the engine harness every ounce of power it can produce. These downpipes are made with specific car models in mind, ensuring that it is a perfect fit everytime. With a 200 cspi sports-cat for road-legal power these downpipes there are a lot less restricitve than the OE cat material, however they do require a stage 2 remap. For other markets please check your local regulations before ordering.View more

Milltek DPF Delete Pipe

Milltek DPF removal pipe. Modern diesel engines come with Diesel Particulate Filters or DPFs intended to reduce the characteristic black smoke. While this does help control emissions a vehicle equipped with one can suffer from problems if it is not driven at motorway speeds regularly leading to reduced performance and even requiring the replacement of the DPF. On some modern diesel engines it is a very common point of failure. An increasingly popular mod is to remove the DPF altogether to prevent these problems occuring in the first place. Milltek are now offering DPF Delete Pipes for popular diesel engines. This pipe works like a cat replacement pipe, simply replacing the section with the DPF pipe. This acts as a preventative fix and in combination with a remap will lead to a power increase. Notes: Most vehicles require a remap when removing the DPF. The ECU is expecting sensor readings from the DPF. In the UK this is for off-road and show use only. In other markets please check local regulations before ordering this part.View more

Jetex High Flow Sports Catalytic Converter

The Jetex High Flow Sport Catalytic Converters are designed for performance road, trackday, race and rally use and contain metallic substrates increasing performance over ceramic and non-high flow designs. The High Flow Catalysts feature a number of benefits over standard catalysts including: Lower resistance to gas flow, reduced back pressure and increased performance over ceramic and non high flow designs Metallic substrate is more resilient than ceramic core types Cost effective, often cheaper than a replacement manufacturers catalyst Excellent emissions reduction Greater resistance to light impacts and water quenching All models in this range are fitted with a maximum 200 CPSI catalytic converter which is much less restrictive than the original 400 CPSI catalyst. These suit applications with OBD2 on board diagnostics system, so can be easily exchanged for the original without any problems or re-programming done.View more

Piper Performance Cat Bypass – Stainless Steel

Piper Performance Cat Bypass pipes are manufactured from T304 stainless steel for long lasting durability. They have been designed and constructed to improve power, and are an ideal complement to a Piper performance cat back exhaust system. Piper – Power by Design Please note: Where two catalytic converters are present on the standard exhaust system, the cat bypass pipe kit may only bypass the second cat. Please contect our sales hotline to discuss your requirements if you are unsure. Where cat bypass pipes are fitted, emission lights may illuminate due to the increased exhaust gas flow – an ECU upgrade or O2 simulator may be required to rectify this.View more

Jetex Performance Cat Replacement/Decat Pipe

Jetex are a leading supplier of performance exhaust systems. They offer high quality stainless and non-stainless steel exhaust systems for a large range of many popular makes and models. Jetex performance exhausts are designed to reduce back pressure and increase torque and engine performance, resulting in a more responsive and improved driving experience. Every Jetex exhaust is manufactured specifically for each model to ensure perfect fitting and the right exhaust note. Jetex exhausts perform exceptionally well without making a (loud) noise about it. Replacing your existing factory catalytic converter with a replacement pipe removes a major restriction in the factory exhaust system and for applications where emissions are not a concern offers the least restrictive system possible. Please note, any cat-replacement pipe/de-cat pipe will fail the UK MOT test (if you are outside the UK please check your local laws and regulations) so we are selling these items for off-road/show use only. Jetex Performance Exhaust Systems are available in stainless or non-stainless steel to suit different models and requirements. T304 Stainless Steel- lifetime guarantee* T400 Stainless Chromium Exhausts- lifetime guarantee* Aluminised Steel- 18 month guarantee* *Jetex require proof of purchase. Available to original purchaser only, warranty is not transferable.View more

Milltek Hi-Flow Sports Catalyst

Milltek Sports Exhaust Systems have a genuine performance edge – noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete, And a feeling of true exhilaration. An original equipment (OE) catalytic converter will typically have 400 or 600 cells per square inch (CPSI) which are restrictive in their flow, typically allowing an open area of around 55-65%. A Milltek Hi-Flow Cat has only 100-200 CPSI depending on application. These cats have an open area of between 75-85% therefore reducing back pressure substantially whilst increasing flow rate, essential for extracting more performance especially on turbocharged engines. Emission levels are maintained at legal limits by careful selection of the volume of metalic substrate And the Lambda sensor positions remain unchanged from the original equipment sensors. Note: Milltek Hi-Flow Catalysts are manufactured from the highest quality materials And built with maximum performance And longevity in mind. However, they are designed to work specifically in conjunction with other Milltek exhaust products And should not be used on their own (with OEM exhaust systems) or with other manufacturers exhaust systems. If the Milltek catalysts are fitted with non-Milltek exhaust systems then no guarantee regarding noise quality, fit, performance or warranty against their...View more

Magnex Cat Replacement Pipe

Magnex has been established since 1994 and are on of the most highly regarded stainless steel performance exhaust manufacturers. All systems are designed on the car is it meant to fit therefore a perfect fit every time is guaranteed. All Magnex exhausts are manufactured in the UK from T304 aerospace grade stainless steel and bent using the finest mandrel bending machines they are then welded by enthusiastic staff to exceptionally high standards. A Magnex replacement pipe reigns supreme for those seeking the ultimate power increase for track days or motorsport, ensuring optimum performance and sound. Selected models include a de-restricted straight through silencer to maintain sound where necessary.View more

Redback Fault Correction Mini Catalytic Converter

Redback's Catmini is designed for cars with Cat Replacement pipes. As the name suggests it is a miniature catalytic converter. It mounts onto the cat replacement pipe lambda sensor hole and filters the exhaust gasses going to the lambda sensor. On cars with cat replacement pipes this will mean the lambda sensor is reading the exhaust gasses through catmini. This should remove the emissions warning light and prevent any ECU issues. Please note that thisonlyfilters gas going to the lambda sensor, not gas leaving the rear of the exhaust. While a vehicle fitted with one of these will not show an error light it will not pass an emissions test. Fits M18x1.5 thread size.View more

Magnex Replacement Down Pipe

Magnex has been established since 1994 and are on of the most highly regarded stainless steel performance exhaust manufacturers. All systems are designed on the car is it meant to fit therefore a perfect fit every time is guaranteed. All Magnex exhausts are manufactured in the UK from T304 aerospace grade stainless steel and bent using the finest mandrel bending machines they are then welded by enthusiastic staff to exceptionally high standards. A magnex down pipe is designed to replace your factory fitted one and will change the power and performance of your vehicle. The large bore size increases the low down torque of your vehicle making it an excellent modification for a turbo charged car.View more

BM Catalysts

Image is for illustration purposes only.View more

Cobb Tuning Y-Pipe with Sports-Cat

This Sports-Cat Y-Pipe from Cobb Tuning replaces the Y-Pipe and cats on a Nissan R35 GT-R. The factory catalytic converter is usually the most restrictive part of any exhaust. The substrate is a natural obstruction to the flow of exhaust gas through the exhaust. While significant gains can be achieved with software alone Cobb start by replacing this with a freer-flowing spun metal substrate which obstructs the flow of exhaust gas less. This is important on a turbocharged engine. You want as little obstruction behind the turbo as possible to allow the turbo to boost as effortlessly as possible. Cobb then combine that with carefully redesigned Y-Pipe pipework. Cobb's Y-Pipe comes with added flexipipe sections for added lifespan and pipework generally designed for as little obstruction and turbulence as possible. Turbulence is important too, because it can delay the turbo spooling up. As soon as you put your foot down, you want exhaust gases to be able to instantly flow away. When combined with Cobb's own software, gains of up to 50BHP in the midrange can be achieved and 28BHP at peak output.View more

Cobb Tuning Downpipe with Sports-Cat

These Sports Cat Downpipes are an essential for getting more power out of your Cobb tuned vehicle than can be achieved with software alone, or lesser modifications to your exhaust system. The factory catalytic converter is always going to be the most restrictive part of your factory exhaust system. The exhaust gas must flow through a mesh which reduces the flow-rate and adds delay to the gas escaping the exhaust system. By replacing the factory catalyst with a less restrictive spun-metal sports-catalyst you can significantly increase the flow-rate of the exhaust system. The overall dimensions of the turbo downpipe also matter. Cobb have increased the overall dimensions and designed the pipework to flow smoother and faster than the factory downpipe. This combination ensures that the Cobb downpipe gets more gas out of the engine, quicker. As with any modification to the factory emissions system, you do need to remap the vehicle. Cobb offer specific maps for their own Sports Cats. Because they are providing both the hardware and the software, the map can be specifically finetuned for the hardware.View more

Supersprint Cat Replacement Pipe

These Supersprint Cat Replacement Pipes are designed to be fittedisnetad of the original catalytic converter to give free flowing exhaust gases, reducing back pressure and giving increased power, improved reponse and better drivability. Supersprint cat pipes are intended for competition or show use, where the vehicle is not to be used on the road.View more

Cobb Tuning Up-Pipe

On Subaru engines, the pipe that carries exhaust gases to the turbo has a catalytic converter in on many engines. This is both a performance loss and a reliability problem. It's a performance loss because it delays gas from reaching the turbo and spooling up. In the long term it can become a reliability problem because if the catalytic converter starts breaking up, pieces of it can fly into the turbine wheel of the turbo and damage it. Cobb get round both of these problems by offering this de-cat up-pipe. The pipe itself is 2" in diameter, and constructed from mandrel-bent, T304 Stainless Steel with chunky 1/2" flanges. By making their pipe to very close tolerances, Cobb have been able to remove the need for a fragile flexipipe section.View more