Light grey BMW 3 Series saloon on open tarmac at dusk, rear three-quarter view showing the diffuser and exhaust tips

BMW 3 Series G20 / G21 (2018–2022) Performance Parts & Styling Upgrades

BMW G20 / G21 3 Series (2018–2022) Pre-LCI Parts & Accessories

BMW 3 Series G20 / G21 (2018–2022) Performance Parts & Styling Upgrades

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  • BMW M340i xDrive Saloon G20 & Touring G21 (OPF/GPF Models) Exhaust System by Milltek (2019+) - AUTOID® - Exhaust System - Milltek Sport
    Sale

    BMW M340i xDrive Saloon G20 & Touring G21 (OPF/GPF Models) Exhaust System by Milltek (2019+)

    BMW M340i xDrive Saloon G20 & Touring G21 (OPF/GPF Models) Exhaust System by Milltek (2019+)
    $1,656.00 $1,839.00
  • BMW 3 Series M340i G20 G21 Pre-LCI Carbon Fibre Front Splitter by Adro (2018-2022) - AUTOID® - Front Lips & Splitters - Adro
    Sale

    BMW 3 Series M340i G20 G21 Pre-LCI Carbon Fibre Front Splitter by Adro (2018-2022)

    BMW 3 Series M340i G20 G21 Pre-LCI Carbon Fibre Front Splitter by Adro (2018-2022)
    $1,214.00 $1,349.00
    In stock
  • BMW 3 Series, M340i G20 & M3 G80 Pre-Preg Carbon Fibre Rear Spoiler by Adro (2018+) - AUTOID® - Rear Spoilers - Adro

    BMW 3 Series, M340i G20 & M3 G80 Pre-Preg Carbon Fibre Rear Spoiler by Adro (2018+)

    BMW 3 Series, M340i G20 & M3 G80 Pre-Preg Carbon Fibre Rear Spoiler by Adro (2018+)
    $1,237.00
  • BMW 3 Series M340i G20 Carbon Fibre Side Skirt by Adro (2018+) - AUTOID® - Side Skirts & Winglets - Adro

    BMW 3 Series M340i G20 Carbon Fibre Side Skirt by Adro (2018+)

    BMW 3 Series M340i G20 Carbon Fibre Side Skirt by Adro (2018+)

    (1)

    $1,124.00
  • BMW 3 Series M340i G20 Pre-LCI Carbon Fibre Rear Diffuser by Adro (2018-2022) - AUTOID® - Rear Diffusers - Adro

    BMW 3 Series M340i G20 Pre-LCI Carbon Fibre Rear Diffuser by Adro (2018-2022)

    BMW 3 Series M340i G20 Pre-LCI Carbon Fibre Rear Diffuser by Adro (2018-2022)

    (1)

    $1,406.00
    In stock
  • Eibach BMW 3 Series G20 & M3 G80 Anti-Roll Bar Kit (2019+) - AUTOID® - Anti-Roll Bar - Eibach

    Eibach BMW 3 Series G20 & M3 G80 Anti-Roll Bar Kit (2019+)

    Eibach BMW 3 Series G20 & M3 G80 Anti-Roll Bar Kit (2019+)
    $618.00
  • BMW 3 Series G21 & M3 G81 Touring Carbon Fibre Roof by Alpha-N (2020+) - AUTOID® - Carbon Roofs & Accessories - Alpha-N

    BMW 3 Series G21 & M3 G81 Touring Carbon Fibre Roof by Alpha-N (2020+)

    BMW 3 Series G21 & M3 G81 Touring Carbon Fibre Roof by Alpha-N (2020+)
    $3,937.00
  • BMW 2 Series M240i G42 & 3 Series M340i G20 Arma Speed Carbon Fibre Cold Air Intake (2019+) - AUTOID® - Air Intakes - Arma Speed

    BMW 2 Series M240i G42 & 3 Series M340i G20 Arma Speed Carbon Fibre Cold Air Intake (2019+)

    BMW 2 Series M240i G42 & 3 Series M340i G20 Arma Speed Carbon Fibre Cold Air Intake (2019+)
    $1,349.00
  • BMW Magnetic Gloss & Matte Pre-Preg Carbon Fibre Paddle Shifters Set by TXCP - AUTOID® - Paddle Shifters - TXCP

    BMW Magnetic Gloss & Matte Pre-Preg Carbon Fibre Paddle Shifters Set by TXCP

    BMW Magnetic Gloss & Matte Pre-Preg Carbon Fibre Paddle Shifters Set by TXCP
    $337.00
    In stock
  • 2Forge ZF2 Semi-Forged Wheels - AUTOID® - Flow Forged Wheels - 2Forge
    Single Alloy

    2Forge ZF2 Semi-Forged Wheels

    2Forge ZF2 Semi-Forged Wheels
    $380.00
  • 2Forge ZF4 Semi-Forged Wheels - AUTOID® - Flow Forged Wheels - 2Forge
    Single Alloy

    2Forge ZF4 Semi-Forged Wheels

    2Forge ZF4 Semi-Forged Wheels
    $483.00
  • 2Forge ZF7 Semi-Forged Wheels - AUTOID® - Flow Forged Wheels - 2Forge
    Single Alloy

    2Forge ZF7 Semi-Forged Wheels

    2Forge ZF7 Semi-Forged Wheels
    $254.00
  • BMW 3 Series G20 G21 Pre-LCI Pre-Preg Carbon Fibre Front Splitter by FORM (2018-2022) - AUTOID® - Front Lips & Splitters - FORM Industries

    BMW 3 Series G20 G21 Pre-LCI Pre-Preg Carbon Fibre Front Splitter by FORM (2018-2022)

    BMW 3 Series G20 G21 Pre-LCI Pre-Preg Carbon Fibre Front Splitter by FORM (2018-2022)
    $731.00
  • TR87 V2 Pre-Preg Carbon Fibre Rear Wing by TREVORA - AUTOID® - Rear Wings - TREVORA
    Whilst Stocks Last

    TR87 V2 Pre-Preg Carbon Fibre Rear Wing by TREVORA

    Pre-preg

    TR87 V2 Pre-Preg Carbon Fibre Rear Wing by TREVORA
    $1,799.00
    In stock
  • MMX Performance Lowering Springs – BMW G20 M340i / 330i - AUTOID® - Lowering Springs - MMX Performance

    MMX Performance Lowering Springs – BMW G20 M340i / 330i

    MMX Performance Lowering Springs – BMW G20 M340i / 330i
    $455.00
  • Magnetic Front Plate Refresher Kit by Plateless

    Magnetic Front Plate Refresher Kit by Plateless

    Magnetic Front Plate Refresher Kit by Plateless

    (3)

    $40.00
    In stock
  • AP Carbon Fibre Front Arch Guards for BMW 3 Series (2018+, G20 G21) - AUTOID® - Arch Guards & Flaps - Automotive Passion
    Sold out

    AP Carbon Fibre Front Arch Guards for BMW 3 Series (2018+, G20 G21)

    AP Carbon Fibre Front Arch Guards for BMW 3 Series (2018+, G20 G21)

    (2)

    $78.00
  • AUTOID V1 Matte Sunstrip with Gloss Logo Overlay - AUTOID® - Vinyl Decals & Stickers - AUTOID

    AUTOID V2 Matte Sunstrip with Gloss Logo Overlay

    AUTOID V2 Matte Sunstrip with Gloss Logo Overlay

    (12)

    $17.00
    In stock
  • 2Forge ZF9 Semi-Forged Wheels - AUTOID® - Flow Forged Wheels - 2Forge

    2Forge ZF9 Semi-Forged Wheels

    2Forge ZF9 Semi-Forged Wheels

    (1)

    $259.00
  • Tillett B10 XL Car Seat (45cm, Rolled Edges Off) - AUTOID® - Car Seat - Tillett

    Tillett B10 XL Car Seat (48.5cm, Rolled Edges On)

    Tillett B10 XL Car Seat (48.5cm, Rolled Edges On)
    $1,364.00

Frequently asked questions
How do I know if my G20/G21 is pre-LCI or LCI?

The pre-LCI G20/G21 covers build dates from late 2018 to approximately mid-2022. The LCI facelift was introduced in mid-2022 and can be identified by revised headlight clusters, a restyled lower front bumper and updated rear bumper detailing. The simplest check is your BMW's build date plate (found inside the driver's door frame) - if it reads before mid-2022, your car is most likely pre-LCI. Contact our team if you are unsure.
Does the AUTOID carbon competition front splitter fit the G20 M Sport and M340i?

Yes. The AUTOID carbon competition front splitter is confirmed for the G20 saloon and G21 Touring in both M Sport and M340i specification - all require the M Sport front bumper, which is standard on the M340i and available as a factory option on M Sport 3 Series variants.
What ADRO products are available for the G20/G21 pre-LCI?

AUTOID is an official ADRO distributor. For the G20/G21 pre-LCI, we stock the ADRO carbon rear diffuser as part of ADRO's full carbon programme for the M340i (which also includes a front splitter, side skirts and rear spoiler). Contact us for a full programme quote.
Is the Milltek exhaust for the G20/G21 available for both OPF and non-OPF models?

The Milltek system for the G20/G21 M340i in this range is specifically designed for OPF/GPF-equipped models (the most common configuration from 2019 onwards). It is ECE approved for road use and does not remove the OPF/GPF. An OPF delete variant is also available for off-road and track use only.

BMW G20 / G21 3 Series (2018–2022) Pre-LCI Parts & Accessories

The BMW G20 saloon and G21 Touring represent the seventh generation of the 3 Series - a car that set the benchmark for the executive saloon class with precise, rear-wheel drive handling dynamics, exceptional engine options and interior quality that challenged vehicles in the class above. This collection covers the pre-LCI G20/G21 (2018–2022 build dates) with a comprehensive range of performance upgrades, carbon fibre exterior parts, suspension solutions and exhaust systems.

At AUTOID, our G20/G21 pre-LCI range has been carefully curated for the specific bumper and body panel geometry of the 2018–2022 chassis. Key products include the AUTOID Competition Carbon Front Splitter, ADRO Carbon Rear Diffuser, AUTOID Gloss Black Mirror Covers, Milltek Sport M340i Exhaust System and Eibach Pro-Kit lowering springs - all confirmed fitments for the pre-LCI model.

It is important to note that the 2022+ G20/G21 LCI facelift introduced revised front and rear bumper profiles. Products designed for the pre-LCI (2018–2022) are not always compatible with the LCI model and vice versa. If your car was built in 2022, please check your build date carefully or contact our team to confirm your exact specification.

Key Product Areas:

  • AUTOID carbon fibre competition front splitter (pre-LCI specific)
  • ADRO carbon rear diffuser - 2x2 weave, OEM M Performance quality
  • AUTOID gloss black mirror covers (G20/G21/G22/G23/G26)
  • Milltek Sport exhaust system for M340i G20/G21 (GPF/OPF-back)
  • Eibach Pro-Kit lowering springs (suitable for M340i and 3 Series M Sport)
  • Genuine BMW M Performance exterior accessories