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Milltek Sport
Milltek Sport for Porsche
Milltek Sport exhausts for Porsche are produced in high quality type-304 aircraft grade stainless steel. This material is anti-magnetic and less susceptible to discolouration, and is used for all pipework and the full construction of the silencer. Mandrel bending is employed to maintain full-bore bends for better gas flow, and Milltek systems typically use an increased bore to support performance while aiming to retain mid-range torque. All Milltek exhausts are designed, developed and manufactured in-house in the UK and supplied for Porsche applications via Design911.
A Quick Look at Milltek Sport
Milltek Sport 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 Milltek Sport 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, body style, engine variant, side or position, and connector type or valve control where relevant. Exhaust choice should also take into account sound level (resonated vs non-resonated), use of valves, and compatibility with any existing or planned tuning modifications.
- Typical reasons people replace these parts include upgrading from a corroded or restrictive factory system, changing the sound character, and supporting other performance modifications while maintaining reputable build quality and fitment.
- Common symptoms that prompt inspection include drone at certain RPM, rattles, blowing joints, exhaust leaks, and valve or actuator issues on valved systems, sometimes made worse by tired mounts or mixed old/new hardware.
- Practical installation tips include refreshing mounts, clamps and gaskets, checking heat shield and undertray clearances, and only fully tightening fixings once alignment and tip position are correct.
- Sound level, drone and legality can vary with configuration and local rules, so always review product notes and any emissions information for your specific Porsche model.
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 parts and software for Porsche are used to refine drivability, support hardware changes such as intake, exhaust or forced induction, and address issues like flat spots or poor running when the existing calibration no longer suits the engine setup.
- Have the engine mechanically checked (compression/leak-down, boost or vacuum leaks, fueling and cooling health) before tuning, as calibration changes cannot correct underlying faults.
- Review sensor data and existing fault codes so that any misfires, knock events or mixture issues are resolved prior to mapping.
Exhaust Packages — Exhaust packages group compatible components such as headers, catalysts, silencers and tailpipes to improve flow, sound and durability on Porsche models, while reducing the risk of mixing mismatched parts.
- Consider how changes to catalysts and noise levels may affect local emissions or inspection requirements, especially on road-driven cars.
- Plan for replacement gaskets, clamps, mounts and fixings, and be prepared to deal with rusted or seized hardware during installation.
Exhausts — Exhaust systems for Porsche range from near-OE replacements to full performance setups aimed at changing tone, reducing weight or improving gas flow to suit tuned engines.
- Watch for signs such as blowing or ticking noises, corrosion, rattles, soot marks at joints, exhaust smell, or emissions warnings, which can all indicate exhaust issues.
- When changing an exhaust, it is usually wise to replace gaskets, clamps and any corroded fasteners, and to check hanger condition and alignment to minimise vibration and drone.
Exhaust Package — Complete exhaust system packages for Porsche bundle manifolds, silencers, catalytic converters and connecting pipes into a matched kit designed for a particular balance of sound, flow and refinement.
- Using a proven package can reduce the chance of combining parts that create unwanted drone, clearance issues or tuning mismatches.
- On more heavily modified setups, consider whether a calibration update is advisable after major changes to headers or catalysts.
Milltek Sport Exhaust — Milltek Sport exhaust systems for Porsche use type-304 stainless steel and mandrel-bent pipework to offer a durable, free-flowing alternative to factory exhausts, with options aimed at different sound levels and configurations.
- Select between resonated, non-resonated and valved options according to how you use the car and your tolerance for cabin sound and drone.
- Allow time during fitting to fine-tune alignment, tip position and valve operation (where applicable), and use new clamps and gaskets to help prevent future leaks or rattles.
Explore Milltek Sport at Design911
View the current Milltek Sport range for Porsche at Design911, then filter by model and category to narrow down to the right parts.
Pre Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2019>>2020
Porsche 718 Boxster GTS 4.0L 2019>>2020
Only For Cars With Gas Particulate Filter (GPF)
Sports Exhaust System With Gas Particulate Filter (GPF) Bypass
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO258: LH GPF/OPF Bypass
MSPO259: RH GPF/OPF Bypass
MSPO260: LH Valve Assembly
MSPO261: RH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO263: x2 Outlet Pipes
MSTIP251: x2 4.5" Cerakote Black Tips
For Track Use ONLY!
Requires Stage 2 ECU Software
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO149
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Fits:
Porsche 718 Boxster GTS 2.5L 2016>>2020
Porsche 718 Cayman GTS 2.5L 2016>>2020
Exhaust System Including Catalytic Converter By-Pass Pipe
Pipe Diameter: 2.50" (63.50mm)
Tailpipe: 102mm Carbon Jet
For Track Use ONLY!
Parts Assembly:
MSPO256REP: Catalytic Converter Bypass Pipe
MSPO257: Connecting Pipe
MSPO251: LH Front Connecting Pipe
MSPO252: RH Front Connecting Pipe
MSPO253: LH Rear Connecting Pipe
MSPO254: RH Rear Connecting Pipe
MSPO255: Rear Silencer Balance Pipe
MSTIP226: x2 Carbon Jet-100 Trims (To Fit 63.5mm OD Outlets) (Fits All Systems That Use MSVW373 Family Of Trims)
For Track Use ONLY!
Requires Stage 2 ECU Software
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO148
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Fits:
Porsche 718 Boxster GTS 2.5L 2016>>2020
Porsche 718 Cayman GTS 2.5L 2016>>2020
Exhaust System Including Catalytic Converter By-Pass Pipe
Pipe Diameter: 2.50" (63.50mm)
Tailpipe: Dual 100mm GT100
Parts Assembly:
MSPO256REP: Catalytic Converter Bypass Pipe
MSPO257: Connecting Pipe
MSPO251: LH Front Connecting Pipe
MSPO252: RH Front Connecting Pipe
MSPO253: LH Rear Connecting Pipe
MSPO254: RH Rear Connecting Pipe
MSPO255: Rear Silencer Balance Pipe
MSVW374: x2 Titanium Tips
For Track Use ONLY!
Requires Stage 2 ECU Software Update
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO146
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Fits:
Porsche 718 Boxster GTS 2.5L 2016>>2020
Porsche 718 Cayman GTS 2.5L 2016>>2020
Exhaust System Including Catalytic Converter By-Pass Pipe
Pipe Diameter: 2.50" (63.50mm)
Tailpipe: Dual GT100
Parts Assembly:
MSPO256REP: Catalytic Converter Bypass Pipe
MSPO257: Connecting Pipe
MSPO251: LH Front Connecting Pipe
MSPO252: RH Front Connecting Pipe
MSPO253: LH Rear Connecting Pipe
MSPO254: RH Rear Connecting Pipe
MSPO255: Rear Silencer Balance Pipe
MSVW372: x2 Cerakote Black Tips
For Track Use ONLY!
Requires Stage 2 ECU Software Update
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO145
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Fits:
Porsche 718 Boxster GTS 2.5L 2016>>2020
Porsche 718 Cayman GTS 2.5L 2016>>2020
Exhaust System Including Catalytic Converter By-Pass Pipe
Pipe Diameter: 2.50" (63. 50mm)
Tailpipe: Dual GT100
Parts Assembly:
MSPO256REP: Catalytic Converter Bypass Pipe
MSPO257: Connecting Pipe
MSPO251: LH Front Connecting Pipe
MSPO252: RH Front Connecting Pipe
MSPO253: LH Rear Connecting Pipe
MSPO254: RH Rear Connecting Pipe
MSPO255: Rear Silencer Balance Pipe
MSVW373: x2 Polished Tips
For Track Use ONLY!
Requires Stage 2 ECU Software update
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO144
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Only With GPF (Gasoline Particulate Filter)
Particulate Filter - Backwards
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP250: x2 4.5" Polished Tips
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO157
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Only With GPF (Gasoline Particulate Filter)
Particulate Filter - Backwards
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP251: x2 4.5" Cerakote Black Tips
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO158
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Only With GPF (Gasoline Particulate Filter)
Particulate Filter - Backwards
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm JET-115
Parts Assembly:
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP244: x2 Jet-115 Carbon Trims
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO161
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Particulate Filter - Backwards
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP253: x2 4.5" Burnt Titanium Tips
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO160
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Particulate Filter - Backwards
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP252: x2 4.5" Brushed Titanium Tips
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO159
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Exhaust System With GPF (Gasoline Particulate Filter) Delete
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP250: x2 4.5" Polished Tips
For Track Use ONLY!
Requires Stage 2 ECU Software
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO162
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Exhaust System With GPF (Gasoline Particulate Filter) Delete
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP251: x2 4.5" Cerakote Black Tips
For Track Use ONLY!
Requires Stage 2 ECU Software
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO163
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Exhaust System With GPF (Gasoline Particulate Filter) Delete
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm JET-115
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP244: x2 Jet-115 Carbon Trims
For Track Use ONLY!
Requires Stage 2 ECU Software
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO166
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Exhaust System With GPF (Gasoline Particulate Filter) Delete
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP253: x2 4.5" Burnt Titanium Tips
For Track Use ONLY!
Requires Stage 2 ECU Software Update
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO165
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 Build ONLY!
Fits:
Porsche 718 Cayman GT4 4.0L 2020>>
Porsche 718 Boxster GTS 4.0L 2020>>
Exhaust System With GPF (Gasoline Particulate Filter) Delete
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263: x2 Outlet Pipes
MSTIP252: x2 4.5" Brushed Titanium Tips
For Track Use ONLY!
Requires Stage 2 ECU Software Update
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO164
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Pipe Diameter: 2.50" (63.50mm)
Tailpipe: Dual 100mm GT100
NOTE: CAT SECTION FITS GPF MODELS ONLY
Fits:
Porsche 718 Boxster GTS 2.5L 2016>>2020
Porsche 718 Cayman GTS 2.5L 2016>>2020
Parts Assembly:
MSPO256: High Flow Sports Catalytic Converter
MSPO257: Connecting Pipe
MSPO251: LH Front Connecting Pipe
MSPO252: RH Front Connecting Pipe
MSPO253: LH Rear Connecting Pipe
MSPO254: RH Rear Connecting Pipe
MSPO255: Rear Silencer Balance Pipe
MSVW374: x2 Titanium Tips
For Track Use ONLY!
Requires Stage 2 ECU Software
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO141
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp)
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)