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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram

DesignTek

DesignTek
About DesignTek

DesignTek for Porsche

DesignTek parts for Porsche models from Design911.

A Quick Look at DesignTek

DesignTek information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.

Choosing the Right Fit for Your Porsche

Where DesignTek is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.

  • Typical reasons to choose these parts include fixing common wear points, returning a Porsche to standard performance, and managing running costs on older cars.
  • Common triggers for replacement are leaks, knocks, worn mounts, poor ride quality, and intermittent operation of affected components.
  • Watch for real-world symptoms such as hesitation, flat spots, noisy or restricted intake, warning lights, rough running, and reduced fuel economy.
  • Before upgrading or tuning, ensure underlying mechanical issues are resolved rather than masked by new parts.
  • When servicing or modifying, inspect adjacent components at the same time to avoid repeat labour or missed wear items.
  • Check what fittings, seals, and hardware are included with each part and add any required extras so the job can be completed in one go.

Browse by Category

If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.

Engine Tuning — Engine tuning components for Porsche are typically used to improve drivability, throttle response, and power delivery, or to support other hardware changes where listed.

  • Confirm the engine’s health and check for boost or vacuum leaks before any tuning work.
  • Review sensor data, oil and coolant temperatures, and fuel delivery to ensure the car is mechanically sound.

Air Filters — Air filters for Porsche applications help maintain correct airflow while protecting the engine from dust and debris, with changes usually driven by routine service or performance goals.

  • Replace filters more frequently if the car is used in dusty or harsh environments.
  • Avoid over-oiling reusable filters to reduce the risk of sensor contamination where fitted.

Air Induction Kits — Air induction kits for Porsche are selected to alter airflow and sound and, where design allows, to reduce restriction or manage intake temperatures as part of a wider tuning package.

  • Ensure the kit maintains proper sealing and sensible intake air temperatures to protect drivability.
  • Check mounting security and routing after installation to minimise rattles, hot-air ingestion, or water exposure.

Service Parts — Service parts for Porsche are changed as part of scheduled maintenance to protect the engine and supporting systems, helping preserve performance, reliability, and efficiency.

  • Use correct-specification oils, filters, plugs, and fluids and keep a clear record of what has been replaced.
  • Shorten service intervals if the car sees frequent short journeys or hard use.

Air Filters — Replacement and performance air filters for Porsche applications are used to maintain clean, consistent airflow and can also support specific performance or motorsport needs where appropriate.

  • Inspect the airbox or housing when changing the filter and ensure the seal seats evenly all the way around.
  • If a performance filter is used, follow the maker’s cleaning and re-oiling instructions carefully.

Explore DesignTek at Design911

View the current DesignTek range for Porsche at Design911, then filter by model and category to narrow down to the right parts.

DISPLAYING 321 to 336 (of 445 products)
Special Offer
3606405702
Product Information
Product Information
DesignTek Exhaust tail pipes quad tube"MID-NIGHT BLACK EDITION"

designtek

DesignTek Cayenne Quad tail pipes, made from T304 stainless steel finished in "MID-NIGHT BLACK EDITION"

Bore: W 230mm x H 100mm

Fits:
Porsche Cayenne 957 - all models

* not for cars with factory sports exhaust, this product requires the larger outlets in the rear valance 4 tube tail pipe outlets. We do offer a lower valance kit if you need one. Part No. SPOILERKIT18

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3606405702
3606405702
95511125140
95511125171
95511125240
95511125271
95511125150
95511125250
95511125230
95511125130

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Special Offer
3606009913
Product Information
Product Information
DesignTek Secondary Exhaust Muffler Bypass for Porsche 991 S 3.8L

designtek

Fits:
Porsche 991 Carrera S 3.8L

These simple U/J pipes remove the mufflers that are tucked up in the rear quarter panels. Why the reason for these I do not know. Typically in the past we either see a main centre muffler or 2 mufflers with catalyst pipes. So this was the first simplest part to change out. Keeping the same diameter for a perfect OEM replacement, these pipes are straight through which not only eliminates any muffler packing or baffling, but also the weight. Each stock muffler weighs approximately 15.6lbs. The Designtek Secondary Exhaust Muffler Bypass Pipes are about 3lbs each. Now eliminating restriction, we have also saved about 25lbs off the rear end. Because this part still retained the factory headers with cats and the factory center muffler, it added a slightly deeper tone to the exhaust but not a drastic droning change that a full exhaust could. Upon revving the car out stationary and on the dyno, you could hear the tone change nicely as you past the 4000rpm mark.

Garage Notes: The pipes sometimes rub on the heatshields causing a resonation through the car. This can be sorted by redressing the heatshields but isn't a straight forward bolt up and go replacement.

The sound its self is quite impressive and very sporty from the outside but to drive causes a pretty bad droning sound under normal driving conditions. This exhaust peaks at 101decibels

According to the factories dyno test, the secondary muffler bypass pipes really start achieving performance from 3700rpm all the way to redline. With a baseline test in 3rd gear and all wheel drive (have to for the dyno and no warning lights), the car made 344HP and 289ft/lbs of torque. Based on the ambient temperature, the factories Mustang Dyno, and 91octane fuel, this is about right considering the car comes with 400bhp. With the addition of our pipes, the car put down 358HP and 298ft/lbs of torque gaining 14HP and 9ft/lbs at the peak.

Click 'Zoom in' for large parts diagram.
3606009913 replace No11/12.



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3606009913
175909-01
99111132101
99111132103
99111132102
99111132501
99111132502
99111132503
99111132201
99111132203
99111132601
99111132602
99111132603

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Special Offer
3606009911
Product Information
Product Information
A Voucher for £100 available when you buy this product. For more information CLICK HERE

DesignTek front X-Pipe exhaust with valvetronic switch Porsche 991 S 3.8L

designtek

Fits:
Porsche 991 Carrera 3.8L S

This front X-Pipe exhaust is also interchangeable with the stock parts. The design deletes the front mufflers for a sports and race sound. You can keep all original exhaust fittings as the OEM fitting the same, like the factory centre muffler with its 3rd chamber, this floats behind the exhaust tip for a full stock look.

High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Turbo Sound

Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025

For Wiring Diagram please CLICK HERE

Click 'Zoom in' for large parts diagram.
3606009911 replace No 7.

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3606009911
115280-04
99111133105
99111133107
99111133104
99111133106

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Special Offer
3606009921
Product Information
Product Information
DesignTek front Muffler X-Pipe exhaust with valvetronic switch Porsche 991.1

designtek

Fits:
Porsche 991 Carrera 3.4L
Porsche 991 Carrera S 3.8L

This front Muffler X-Pipe exhaust is also interchangeable with the stock parts. The design deletes the front mufflers for a sports and race sound. You can keep all original exhaust fittings as the OEM fitting the same, like the factory centre muffler with its 3rd chamber, this floats behind the exhaust tip for a full stock look.

High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Turbo Sound

Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025

For Wiring Diagram please CLICK HERE

Click 'Zoom in' for large parts diagram.
3606009921 replace No 7.

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3606009921
115280-01
99111133105
99111133107
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3606309705
Product Information
Product Information
Exhaust Manifold / Header Equal length manifolds with larger 45mm bore the standard original ones are normally 38mm

designtek

DesignTek Predator High Grade stainless steel equal length headers. Sport stainless steel headers have been designed to increase HP and TQ on cars fitted with the factory turbo chargers. The short design is perfectly matched for the exhaust travel from the heads to the turbos for better boost response and power throughout the rev range.
The smooth flow through the mandrel bends and pyramid merge collector offer superior flow characteristics as compared to the OEM headers. Power gains are increased by 14 HP and 16 Ft. TQ with no other modifications.

- All T304 Stainless Steel construction
- Mandrel bent short primary tubes
- Flowed Pyramid merge collector
- Designed specifically for cars fitted with Factory Turbos

Fits:
Porsche 997 Turbo
Porsche 997 GT2 Turbo
Porsche 996 K16

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3606309705
3606309705
99611110176
99611110276
99611110273
99611110173

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Special Offer
3604109112
Product Information
Product Information
This adapter kit is for upgrading Porsche 911 '74-89 rear brakes to 996 C2 rear calipers and rotors.
Set of 2 brackets 


rear
Porsche 911 1974-89 (with 17" wheels or bigger)

Please Note: your car must be fitted with 17" wheels or bigger for the clearance reasons

Reference code for the 299 x 24 mm C2 brake rotors: 996.352.401.04



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3604109112
9P-911C2R

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Special Offer
3606408702
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Product Information
Exhaust tail pipes Carbon Design Print Finish made by DesignTek.

designtek

Twin Outlet with Carbon Design Print Finish

Fits:
Porsche 987 Boxster 2005>>
Porsche 987C Cayman 2005>>

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3606408702
3606408702
98711125402
98711125401
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98711125501
98711125601
98711198100
98711125730
98711198130
98711125860

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Special Offer
3608300001
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Locking Wheels Bolt Kit in Stainless Steel.
Fits cars without spacers or with spacers upto 7mm

designtek

Rusty old looking wheel bolts can spoil the look of your Porsche and even damage your alloy wheels.
Performance parts makers DesignTek have come out with a range of high quality locking wheel bolts to match their stainless wheel bolts range.

The Technical:
DesignTek wheel bolts are produced from SCM440 grade alloy steel which has good resistance to a wide variety of corrosive media including nitric acid and some organic acids. It attains its maximum corrosion resistance when in the highly polished or buffed condition. In general its resistance to pitting and crevice corrosion resistance is close to that of grade 304. Stress corrosion cracking resistance of Grade 440 is very high. Each wheel bolt is chrome-plated and salt spray tested 240 hours

Fits:
Porsche Boxster 986 / 987
Porsche 996 / 997
Porsche 987C Cayman

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3608300001
99736198009
PAF009593
99136105700
WHT006980C
WHT006980A
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Special Offer
3608300002
Product Information
Product Information
Locking wheel bolt kit (Extra long). Chrome plated 
Fits cars with spacers 12mm-15mm

designtek

Rusty old looking wheel bolts can spoil the look of your Porsche and even damage your alloy wheels.
Performance parts makers DesignTek have come out with a range of high quality locking wheel bolts to match thier stainless wheel bolts range.

The Technical:
DesignTek wheel bolts are produced from SCM440 grade alloy steel which has good resistance to a wide variety of corrosive media including nitric acid and some organic acids. It attains its maximum corrosion resistance when in the highly polished or buffed condition. In general its resistance to pitting and crevice corrosion resistance is close to that of grade 304. Stress corrosion cracking resistance of Grade 440 is very high. Each wheel bolt is chrome-plated and salt spray tested 240 hours

Fits:
Porsche Boxster 986 / 987
Porsche 996 / 997
Porsche 987C Cayman

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3608300002
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BIGBRAKE911R32
Product Information
Product Information
Front Brake Caliper & Disc "Big Reds" Upgrade Kit

designtek

Kit Includes
2 x Turbo Brake Disc 332mm x 32mm
2 x Caliper Mounting Brackets
4 x Caliper Bracket Bolts
2 x Big Red Calipers
1 x Set of Brake Pads
8 x Brake Pad Shims
2 x Caliper stickers in WHITE lettering
2 x Brake cliper sensors

Fits:
Porsche 911 1984-89 3.2L

The minimum size wheels are 17" needed to make the clearance. Some cars may also need wheel spacers to clear the brake calliper offset

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BIGBRAKE911R32
91135142503
91135142603

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3606109963
Product Information
Product Information
Exhaust Catalytic Converter 200Cells Race X-Pipes with LARGE BORE 63mm diameter tubing pipes

designtek

DesignTek sports racing catalytic converters give a HORSEPOWER and TORQUE gain to all 996 cars. High Quality T304 SS C.N.C. mandrel bent tubing for maximum exhaust flow.

The X-Pipe design has increased deeper sound with increased BHP. German imported 200 cell high-flow sport catalytic converters for reduced backpressure and less restriction.

DesignTek sports racing catalytic converters for less restriction and more power and more sports car sound. Simple bolt-on direct replacement sports cats for the factory OEM Porsche catalytic converters.

PLEASE NOTE THESE CATS MAY REQUIRE A REMAP TO ENSURE NO DASHBOARD LIGHTS - Please contact your local tuning shop to have this done!

Fits:
Porsche 996 Carrera 3.4L / 3.6L

Please note: These sport cats will make your car sound louder than with stock cats. If you have ,or intend to install sport silencers, you may find the car is a bit loo loud. We recommend to use one sport exhaust component if you are concerned about decibel levels.

NOTE: In the United Kingdom, sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001. They are not MOT compliant and cannot be used on public roads. These components are intended solely for race and track use.

For vehicles manufactured before 1st March 2001, a non-type approved sports catalytic converter may be fitted, provided it offers comparable performance to the original and the vehicle continues to meet the applicable emissions standards for its age. The vehicle must still pass an MOT test.

If you are located outside the UK, please check your local laws and regulations to ensure compliance.



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3606109963
99611302154
99611302157
99611302156
99611302254
99611302257
99611302256
99611302152
99611302155
99611302159
99611302252
99611302255
99611302259
99611302258
99611302260
99611302158
99611302160

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3606009605
Product Information
Product Information
Exhaust Muffler / Sports Exhaust System DesignTek. Porsche 996 Turbo 200 Cell cats with option for De-cat

designtek

High quality exhaust system for the Porsche 996 Turbo. Manifold back exhaust that includes 200 Cell Sports Cats and does not include tailpipes or manifolds.

The silencers in this exhaust are linked to one another, creating a greater balance between the two silencers which improves flow, performance and provides a sports sound. It is an aftermarket, performance exhaust with a louder note and boasts significant power gains over OE due to a free-flowing, mandrel bent, TIG welded system. The cats are about as powerful as we could get onto the Porsche 911 Turbo while still passing the MOT!

*Removable Cats can be replaced with DesignTek bypass pipes 3606009655. Bypass pipes are for track use only.

DesignTek system fits with original Porsche tail pipes or DesignTek tail pipes.

Fits:
Porsche 996 Turbo 2000-05
Porsche 996 GT2

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3606009605
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3606009717
Product Information
Product Information
Exhaust Muffler / Silencer Sports VALVETRONIC V2.0

Cars with sports exhaust will need to change the tail pipe. See the recommended tailpipe.

designtek

Fits:
Porsche 997 MKII

DesignTek Valvetronic sports exhaust system gives smooth 16Bhp/18 ft-lbs of torque to the wheels with the valves opened, +9HP/11 ft-lbs of torque to the wheels with the valves closed. Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.

This unique exhaust configures a dual-tone setup controlled by a key fob which you can switch on the fly. Direct replacement for the factory mufflers and will work with the stock primary pipe and cats or DesignTek primary bypass pipe.

High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound

Switch opened: Perfect Racing Sports Sound

Superb sports car sound, throaty and deep with the valves opened, but docile with the valves closed. You can reuse your factory OEM Porsche tips or you can opt for DesignTek tail pipes

Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025

Installation instructions for Valvetronic Mufflers CLICK HERE

Valve Controller Installation CLICK HERE

For Wiring Diagram please CLICK HERE

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3606009717
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3606409703
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99711131231
99711113230
99711151131
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EXHAUSTKIT34
Product Information
Product Information
Sports Exhaust + 200 Cell X-Pipe Ø55mm Sports Cats Package

designtek

DesignTek 996 Stage 1 Performance package. High Grade stainless steel exhaust system for Porsche 996 1998-2004. 14 - 16 gauge T304 stainless steel.

Includes sports mufflers, 200 cell sports cats giving that you can really feel and superb sports car sound.
Fitting clamps in the images are not included

PLEASE NOTE THESE CATS MAY REQUIRE A REMAP TO ENSURE NO DASHBOARD LIGHTS - Please contact us regarding this!

NOTE: In the United Kingdom, sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001. They are not MOT compliant and cannot be used on public roads. These components are intended solely for race and track use.

For vehicles manufactured before 1st March 2001, a non-type approved sports catalytic converter may be fitted, provided it offers comparable performance to the original and the vehicle continues to meet the applicable emissions standards for its age. The vehicle must still pass an MOT test.

If you are located outside the UK, please check your local laws and regulations to ensure compliance.

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EXHAUSTKIT34
3606009602
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99611198504
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99611113175
99611113170
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90012305020
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90037818301
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3606009607
Product Information
Product Information
designtek
Exhaust Muffler / Silencer Titanium with Catalytic Converter Twin Chamber Design Weight: 9.90Kg

DesignTek Titanium Super light weight Sport exhaust system. Original Porsche system weight 48Kg, DesignTek Titanium system just 9.90Kg. 996TT / X50/ GT2 / 997 Turbo exhaust system with two 200 cell stainless steel cased German Motorsports Race Cats.

Fits:
Porsche 996 Turbo
Porsche 996 GT2

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3606009607
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EXHAUSTKIT23
Product Information
Product Information
Sports Exhaust VALVETROINC + X-Pipe Design Sports Cat bypass Package

designtek

DesignTek Valvetronic sports exhaust system gives smooth high torque feel to the wheels with the valves opened, +8HP/10 ft-lbs of torque to the wheels with the valves closed. Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.

Valvetronic
High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound

Switch opened: Perfect Racing Sports Sound

DesignTek X-Pipe (primary muffler bypass) deletes the stock primary muffler and saves 6.4 lbs. from the rear of the vehicle. With a fast air flow the X-pipe increases BHP and Toque.

Made from high quality T304 14-16 gauge stainless steel, C.N.C. mandrel bent. The X-Pipe (primary muffler bypass) gives a great exotic car sound and power by about 5 decibels.

NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.

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DISPLAYING 321 to 336 (of 445 products)