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

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

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73 products

Milltek Exhaust Tips for Porsche 911 (991.2) GT3 | GT3 RS (Fits OE & MIlltek System)

Milltek Exhaust Tips for Porsche 911 (991.2) GT3 | GT3 RS (Fits OE & MIlltek System)

Regular price From £511.08 GBP

Regular price Sale price From £511.08 GBP

Milltek Rear Silencer Delete Exhaust System for Porsche 911 (991.2) GT3 | GT3 RS

Milltek Rear Silencer Delete Exhaust System for Porsche 911 (991.2) GT3 | GT3 RS

Regular price From £686.87 GBP

Regular price Sale price From £686.87 GBP

MOTON 3-way Adjustable Coilovers - Porsche 911 (991) GT3 | RS Including 991.2

Sale

MOTON 3-way Adjustable Coilovers - Porsche 911 (991) GT3 | RS Including 991.2

Regular price £5,775.00 GBP

Regular price ~~£6,059.00 GBP~~ Sale price £5,775.00 GBP

Sale

MOTON 3-way Adjustable Coilovers - Porsche 911 (991) Carrera 2 | 4 | 4S | GTS | Targa | Cabrio

Sale

MOTON 3-way Adjustable Coilovers - Porsche 911 (991) Carrera 2 | 4 | 4S | GTS | Targa | Cabrio

Regular price £5,316.67 GBP

Regular price ~~£5,576.00 GBP~~ Sale price £5,316.67 GBP

Sale

MOTON 2-way Adjustable Coilovers - Porsche 911 (991) GT3 | RS Including 991.2

Sale

MOTON 2-way Adjustable Coilovers - Porsche 911 (991) GT3 | RS Including 991.2

Regular price £4,910.00 GBP

Regular price ~~£5,080.00 GBP~~ Sale price £4,910.00 GBP

Sale

MOTON 2-way Adjustable Coilovers - Porsche 911 (991) Carrera 2 | 4 | 4S | GTS | Targa | Cabrio

Sale

MOTON 2-way Adjustable Coilovers - Porsche 911 (991) Carrera 2 | 4 | 4S | GTS | Targa | Cabrio

Regular price £4,910.00 GBP

Regular price ~~£5,080.00 GBP~~ Sale price £4,910.00 GBP

Sale

Porsche 911 GT3 (991.1) | Akrapovic | Slip-On Race Line (Titanium)

Porsche 911 GT3 (991.1) | Akrapovic | Slip-On Race Line (Titanium)

Regular price £3,207.38 GBP

Regular price Sale price £3,207.38 GBP

Porsche 911 GT3 RS (991.2) | Akrapovic | Slip-On Race Line (Titanium)

Porsche 911 GT3 RS (991.2) | Akrapovic | Slip-On Race Line (Titanium)

Regular price £3,207.38 GBP

Regular price Sale price £3,207.38 GBP

Porsche 911 GT3 / GT3 Touring (991.2) | Akrapovic | Slip-On Race Line (Titanium)

Porsche 911 GT3 / GT3 Touring (991.2) | Akrapovic | Slip-On Race Line (Titanium)

Regular price £3,207.38 GBP

Regular price Sale price £3,207.38 GBP

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

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

Regular price £11,191.71 GBP

Regular price Sale price £11,191.71 GBP

Porsche 911 GT3 / GT3 Touring / GT3 RS (991.2) | Akrapovic | Slip-On Line (Titanium)

Porsche 911 GT3 / GT3 Touring / GT3 RS (991.2) | Akrapovic | Slip-On Line (Titanium)

Regular price £5,041.71 GBP

Regular price Sale price £5,041.71 GBP

Porsche 911 GT3 / GT3 RS (991.1) | Akrapovic | Slip-On Line (Titanium) with Tail Pipe Set

Porsche 911 GT3 / GT3 RS (991.1) | Akrapovic | Slip-On Line (Titanium) with Tail Pipe Set

Regular price From £4,951.29 GBP

Regular price Sale price From £4,951.29 GBP

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

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

Regular price From £9,837.78 GBP

Regular price Sale price From £9,837.78 GBP

Porsche 911 Carrera / S / GTS (991.1) | Akrapovic | Sound Kit

Porsche 911 Carrera / S / GTS (991.1) | Akrapovic | Sound Kit

Regular price £484.63 GBP

Regular price Sale price £484.63 GBP

AST Suspension 5100 Competition 1-way Adjustable Inverted Coilovers - Porsche 911 (991) Carrera 2 | 4 | 4S | GTS | Targa | Cabrio

Sale

AST Suspension 5100 Competition 1-way Adjustable Inverted Coilovers - Porsche 911 (991) Carrera 2 | 4 | 4S | GTS | Targa | Cabrio

Regular price £3,458.33 GBP

Regular price ~~£3,600.00 GBP~~ Sale price £3,458.33 GBP

Sale

AST Suspension 5100 Street 1-way Adjustable Inverted Coilovers - Porsche 911 (991) Carrera 2 | 4 | 4s | GTS | Targa | Cabrio

Sale

AST Suspension 5100 Street 1-way Adjustable Inverted Coilovers - Porsche 911 (991) Carrera 2 | 4 | 4s | GTS | Targa | Cabrio

Regular price From £2,458.33 GBP

Regular price ~~£2,550.00 GBP~~ Sale price From £2,458.33 GBP

Sale

Cargraphic Exhaust Valve Controller for Porsche 911 (991.1) Carrera GTS

Sale

Cargraphic Exhaust Valve Controller for Porsche 911 (991.1) Carrera GTS

Regular price From £275.00 GBP

Regular price ~~£316.67 GBP~~ Sale price From £275.00 GBP

Sale

Porsche 911 Turbo / Turbo S (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - Matte)

Porsche 911 Turbo / Turbo S (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - Matte)

Regular price £2,204.86 GBP

Regular price Sale price £2,204.86 GBP

Porsche 911 Turbo / Turbo S (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - High Gloss)

Porsche 911 Turbo / Turbo S (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - High Gloss)

Regular price £2,516.67 GBP

Regular price Sale price £2,516.67 GBP

Porsche 911 Turbo / Turbo S (991.1) | Akrapovic | Rear Diffuser (Carbon Fibre)

Porsche 911 Turbo / Turbo S (991.1) | Akrapovic | Rear Diffuser (Carbon Fibre)

Regular price £1,521.43 GBP

Regular price Sale price £1,521.43 GBP

Porsche 911 GT3 RS (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - High Gloss)

Porsche 911 GT3 RS (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - High Gloss)

Regular price £1,984.50 GBP

Regular price Sale price £1,984.50 GBP

Porsche 911 GT3 / GT3 Touring (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - Matte)

Porsche 911 GT3 / GT3 Touring (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - Matte)

Regular price £1,598.33 GBP

Regular price Sale price £1,598.33 GBP

Porsche 911 GT3 / GT3 Touring (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - High Gloss)

Porsche 911 GT3 / GT3 Touring (991.2) | Akrapovic | Rear Diffuser (Carbon Fibre - High Gloss)

Regular price £1,705.60 GBP

Regular price Sale price £1,705.60 GBP

Porsche 911 GT3 (991.1) | Akrapovic | Rear Diffuser (Carbon Fibre)

Porsche 911 GT3 (991.1) | Akrapovic | Rear Diffuser (Carbon Fibre)

Regular price £1,520.87 GBP

Regular price Sale price £1,520.87 GBP

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Collection: Porsche 911 991 (2011 - 2019)

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