Collection: Porsche 911 991 (2011 - 2019)

Upgrade your Porsche 911 (991) GT3 | GT3 RS |... Read More

Upgrade your Porsche 911 (991) GT3 | GT3 RS | Turbo | Carrera | GTS | Targa with String Theory Garage's range of sourced and engineered parts, and enjoy more power, even better sound, and improved drive experience on the road & track!

From Coilovers suspension upgrades, Cargraphic exhaust valve controllers to Adjustable rear toe arms, String Theory Garage has you covered.

String Theory Garage was born out of a dedication to making cars drive better than ever. Founded in 2018 our passion, enthusiasm and knowledge of vehicle dynamics, suspension tuning and chassis setup has already built us a reputation for going above-and-beyond to supply and fit the right parts for your car. Every car that enters our garage is treated as our own, and does not leave until we, and you, are happy.
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Corvette C5 Z06 2001 - 2004 (1 products)

Corvette C6 Z06 2005 - 2013 (1 products)

Elise (S1) 1996 - 2001 (1 products)

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Emira 3.5 V6 2022 - Present (1 products)

Exige (S2) 2004 - 2011 (1 products)

Exige (S3) 2012 - 2021 (1 products)

F355 (Type F129) 1994 - 1999 (1 products)

F430 (Type F131) 2005 - 2009 (1 products)

Fiesta V ST (JH1 | JD3) 2002 - 2008 (1 products)

Fiesta VI Zetec ST (JA8) 2008 - 2017 (1 products)

Focus RS MK2 (DA_) 2009 - 2010 (1 products)

Focus RS MK3 (DYB_) 2015 - 2018 (1 products)

Focus ST MK2 (DA_) 2008 - 2010 (1 products)

Focus ST MK3 (DYB_) 2015 - 2018 (1 products)

GR Yaris (Gen 1) 2020 - 2023 (1 products)

Huracan LP 640-2 STO 2021 - 2024 (1 products)

Integra Type R (DC5) 2001 - 2006 (1 products)

Lancer Evolution IV (CN9A) 1996 - 1998 (1 products)

Lancer Evolution IX (CT9A) 2005 - 2007 (1 products)

Lancer Evolution V (CP9A) 1998 - 1999 (1 products)

Lancer Evolution VI (CP9A) 1999 - 2001 (1 products)

Lancer Evolution VII (CT9A) 2001 - 2003 (1 products)

Lancer Evolution VIII (CT9A) 2003 - 2005 (1 products)

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73 products

Porsche 911 Carrera / Cabriolet / Targa / S / 4S / GTS (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - Matte)

Porsche 911 Carrera / Cabriolet / Targa / S / 4S / GTS (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - Matte)

Regular price £1,212.16 GBP

Regular price Sale price £1,212.16 GBP

Porsche 911 Carrera / Cabriolet / Targa / S / 4S / GTS (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - High Gloss)

Porsche 911 Carrera / Cabriolet / Targa / S / 4S / GTS (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - High Gloss)

Regular price £1,383.79 GBP

Regular price Sale price £1,383.79 GBP

Porsche 911 Carrera / S / GTS (991.1) | Akrapovic | Slip-On Race Line (Titanium)

Porsche 911 Carrera / S / GTS (991.1) | Akrapovic | Slip-On Race Line (Titanium)

Regular price £8,570.92 GBP

Regular price Sale price £8,570.92 GBP

Porsche 911 Turbo / Turbo S (991.2) | Akrapovic | Slip-On Line (Titanium)

Porsche 911 Turbo / Turbo S (991.2) | Akrapovic | Slip-On Line (Titanium)

Regular price From £6,474.22 GBP

Regular price Sale price From £6,474.22 GBP

Porsche 911 Turbo / Turbo S (991.1) | Akrapovic | Slip-On Line (Titanium)

Porsche 911 Turbo / Turbo S (991.1) | Akrapovic | Slip-On Line (Titanium)

Regular price £5,515.98 GBP

Regular price Sale price £5,515.98 GBP

Porsche 911 GT3 RS / Speedster (991.2) | OPF/GPF | Akrapovic | Slip-On Line (Titanium)

Porsche 911 GT3 RS / Speedster (991.2) | OPF/GPF | Akrapovic | Slip-On Line (Titanium)

Regular price £13,026.04 GBP

Regular price Sale price £13,026.04 GBP

Porsche 911 Carrera / Cabriolet / Targa / S / 4S / GTS (991.2) | Akrapovic | Slip-On Line (Titanium) for OE Sport Exhaust

Porsche 911 Carrera / Cabriolet / Targa / S / 4S / GTS (991.2) | Akrapovic | Slip-On Line (Titanium) for OE Sport Exhaust

Regular price £4,516.00 GBP

Regular price Sale price £4,516.00 GBP

Porsche 911 Turbo / Turbo S (991.1) | Akrapovic | Link Pipe Set w/o Cat (Titanium)

Porsche 911 Turbo / Turbo S (991.1) | Akrapovic | Link Pipe Set w/o Cat (Titanium)

Regular price £2,194.10 GBP

Regular price Sale price £2,194.10 GBP

Porsche 911 GT3 / GT3 Touring / GT3 RS (991.1 / 991.2) | Akrapovic | Link Pipe Set (Titanium)

Porsche 911 GT3 / GT3 Touring / GT3 RS (991.1 / 991.2) | Akrapovic | Link Pipe Set (Titanium)

Regular price £1,018.32 GBP

Regular price Sale price £1,018.32 GBP

Porsche 911 Carrera / Cabriolet / Targa / S / 4S / GTS (991.2) | Akrapovic | Link Pipe Set with Cat (SS)

Porsche 911 Carrera / Cabriolet / Targa / S / 4S / GTS (991.2) | Akrapovic | Link Pipe Set with Cat (SS)

Regular price £3,340.70 GBP

Regular price Sale price £3,340.70 GBP

Porsche 911 GT3 / GT3 Touring / GT3 RS / S/T (991.1 / 991.2 / 992.1) | Akrapovic | dB Reducer (Titanium)

Porsche 911 GT3 / GT3 Touring / GT3 RS / S/T (991.1 / 991.2 / 992.1) | Akrapovic | dB Reducer (Titanium)

Regular price £1,493.53 GBP

Regular price Sale price £1,493.53 GBP

Porsche 911 Carrera / S / GTS (991.2) | Akrapovic | Sound Kit

Porsche 911 Carrera / S / GTS (991.2) | Akrapovic | Sound Kit

Regular price £768.92 GBP

Regular price Sale price £768.92 GBP

IPE MFR-01 Magnesium Wheels

IPE MFR-01 Magnesium Wheels

Regular price £10,750.00 GBP

Regular price Sale price £10,750.00 GBP

Cobra Nogaro Circuit Bucket Seat

Cobra Nogaro Circuit Bucket Seat

Regular price From £707.50 GBP

Regular price Sale price From £707.50 GBP

Cobra Nogaro Street Bucket Seat

Cobra Nogaro Street Bucket Seat

Regular price From £707.50 GBP

Regular price Sale price From £707.50 GBP

Lifeline Copse 2x2 6 Point Harness - Black

Lifeline Copse 2x2 6 Point Harness - Black

Regular price £291.90 GBP

Regular price Sale price £291.90 GBP

Cobra Nogaro Club Sport Bucket Seat

Cobra Nogaro Club Sport Bucket Seat

Regular price £582.50 GBP

Regular price Sale price £582.50 GBP

Porsche 911 GT3 / GT3 Touring / GT3 RS (991.1 / 991.2) | Akrapovic | Evolution Header Set (Titanium)

Porsche 911 GT3 / GT3 Touring / GT3 RS (991.1 / 991.2) | Akrapovic | Evolution Header Set (Titanium)

Regular price £7,984.33 GBP

Regular price Sale price £7,984.33 GBP

Porsche 911 GT3 / GT3 Touring / GT3 RS (991.1 / 991.2) | Akrapovic | Evolution Race Header Set (Titanium)

Porsche 911 GT3 / GT3 Touring / GT3 RS (991.1 / 991.2) | Akrapovic | Evolution Race Header Set (Titanium)

Regular price £5,545.84 GBP

Regular price Sale price £5,545.84 GBP

Nitron R1 Porsche 911 991

Nitron R1 Porsche 911 991

Regular price £3,245.00 GBP

Regular price Sale price £3,245.00 GBP

Ohlins Road & Track DFV Coilovers - Porsche 911 (991) Carrera / Carrera S

Sold out

Ohlins Road & Track DFV Coilovers - Porsche 911 (991) Carrera / Carrera S

Regular price £2,391.67 GBP

Regular price Sale price £2,391.67 GBP

Sold out

Ohlins Road & Track DFV Coilovers - Porsche 991 Carrera 4 GTS / Targa 4

Sold out

Ohlins Road & Track DFV Coilovers - Porsche 991 Carrera 4 GTS / Targa 4

Regular price £2,383.33 GBP

Regular price Sale price £2,383.33 GBP

Sold out

Ohlins Road & Track DFV Coilovers - Porsche 991 Turbo (inc. S)

Sold out

Ohlins Road & Track DFV Coilovers - Porsche 991 Turbo (inc. S)

Regular price £2,383.33 GBP

Regular price Sale price £2,383.33 GBP

Sold out

Ohlins Advanced Track day TTX Coilovers (Motorsport ver) - Porsche 991 GT3 RS

Sold out

Ohlins Advanced Track day TTX Coilovers (Motorsport ver) - Porsche 991 GT3 RS

Regular price £5,958.33 GBP

Regular price Sale price £5,958.33 GBP

Sold out

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Collection: Porsche 911 991 (2011 - 2019)

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