Collection: BMW X Series
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You are now browsing for BMW X1 X2 X3 X4 X5 X6 Parts & Upgrades
Here at String Theory Garage we stock a large and ever expanding range of BMW Parts. A complete range of upgrades. From Suspension upgrades to ECU tuning we have you covered.
We also offer full fitting with ride-height, corner balancing, and geometry setup as well as other services from our garage in Stratford upon Avon.
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AIRTEC Motorsport Cold Side Boost Pipes for BMW N55
Regular price £312.50 GBPRegular priceSale price £312.50 GBP -
AIRTEC Motorsport Hot Side Boost Pipes for BMW N55
Regular price £162.01 GBPRegular priceSale price £162.01 GBP -
AIRTEC Motorsport Intercooler Upgrade for BMW N55 (M2/M135i/M235i/335i/435i)
Regular price £573.05 GBPRegular priceSale price £573.05 GBP -
AIRTEC Motorsport Oil Filter Housing Cap for BMW N20/N52/N54/N55/S55
Regular price £109.34 GBPRegular priceSale price £109.34 GBP -
AIRTEC Motorsport Oil Thermostat Visual Aesthetics Kit for BMW N54/N55/S55
Regular price £97.18 GBPRegular priceSale price £97.18 GBP -
AIRTEC Motorsport Turbo Induction Hose for BMW N55
Regular price £219.95 GBPRegular priceSale price £219.95 GBP -
AST Adjustable Lowering Springs - BMW X5 4WD & X6 4WD (G05 F95 | G06 F96) 2018 - Present
Regular price £900.00 GBPRegular price£936.00 GBPSale price £900.00 GBPSale -
BMW M135i / X2 M35i (F40 / F39) / MINI JCW Countryman / Clubman (F54 / F60) | Akrapovic | Sound Kit
Regular price £461.62 GBPRegular priceSale price £461.62 GBP -
BMW M135i / X2 M35i (F40 /F39) | Akrapovic | Slip-On Line (Titanium)
Regular price £3,872.33 GBPRegular priceSale price £3,872.33 GBP -
BMW X3 M / Competition (F97) | Akrapovic | Tail Pipe Set (Carbon)
Regular price £1,717.84 GBPRegular priceSale price £1,717.84 GBP -
BMW X3 M / Competition / X4 M / Competition (F97 / F98) OPF/GPF | Akrapovic | Sound Kit
Regular price £454.64 GBPRegular priceSale price £454.64 GBP -

BMW X3 M / Competition / X4 M / Competition (F97 / F98) | 2020 | Akrapovic | Slip-On Line (Titanium)
Regular price £3,594.60 GBPRegular priceSale price £3,594.60 GBP -
BMW X3 M / Competition / X4 M / Competition (F97 / F98) | 2020 | Akrapovic | Sound Kit
Regular price £536.22 GBPRegular priceSale price £536.22 GBP -
BMW X3 M / Competition / X4 M / Competition (F97 / F98) | Akrapovic | Evolution Link Pipe Set (Titanium)
Regular price £2,469.19 GBPRegular priceSale price £2,469.19 GBP -
BMW X3 M / Competition / X4 M / Competition (F97 / F98) | Akrapovic | Slip-On Line Exhaust System (Titanium)
Regular price £4,035.67 GBPRegular priceSale price £4,035.67 GBP -
BMW X4 M / Competition (F98) | Akrapovic | Rear Carbon Diffuser (High Gloss)
Regular price £1,934.05 GBPRegular priceSale price £1,934.05 GBP -
BMW X4 M / Competition (F98) | Akrapovic | Tail Pipe Set (Carbon)
Regular price £1,717.84 GBPRegular priceSale price £1,717.84 GBP -
BMW X5 M / Competition / X6 M / Competition (F95 / F96) | 2020 | Akrapovic | Evolution Link Pipe Set (Titanium)
Regular price £2,868.11 GBPRegular priceSale price £2,868.11 GBP -

BMW X5 M / Competition / X6 M / Competition (F95 / F96) | 2020 | Akrapovic | Slip-On Line (Titanium)
Regular price £7,180.54 GBPRegular priceSale price £7,180.54 GBP -
BMW X5 M / Competition / X6 M / Competition (F95 / F96) | 2020—2023 | Akrapovic | Sound Kit
Regular price £461.62 GBPRegular priceSale price £461.62 GBP -
BMW X5 M / Competition / X6 M / Competition (F95 / F96) | 2021—2023 | Akrapovic | Slip-On Line Exhaust System (Titanium)
Regular price £6,648.65 GBPRegular priceSale price £6,648.65 GBP -
BMW X5 M / Competition / X6 M / Competition (F95 / F96) | Akrapovic | Rear Carbon Diffuser (High Gloss)
Regular price £1,423.79 GBPRegular priceSale price £1,423.79 GBP -
BMW X5 M / Competition / X6 M / Competition (F95 / F96) | Akrapovic | Rear Carbon Diffuser (Matte)
Regular price £1,423.78 GBPRegular priceSale price £1,423.78 GBPSold out -
BMW X5 M / X6 M (F85 / F86) | Akrapovic | Rear Carbon Diffuser
Regular price £1,264.86 GBPRegular priceSale price £1,264.86 GBP












