BMW 3/4 Series G20/G22 Prepreg Dry Carbon Fiber Mirror Cap Set

Engineered for BMW G20 / G22 owners, this Prepreg Dry Carbon Fiber Mirror Cap Set is a paired L+R carbon upgrade that fits both the 3 Series Sedan (G20) and 4 Series Coupé (G22) mirror housings exactly. BMW G20 and G22 share the same mirror housing assembly, so the same carbon cap fits both sedan and coupé fitments. Manufactured in Europe to factory-spec tolerances and quality-controlled by BYC Performance, this BMW G20/G22 carbon mirror cap is fully compatible with the OEM mirror motor, heating element, and turn-signal LED.

If you're building a BMW G20 tuning or BMW G22 4 Series tuning project and want a refined yet distinctive carbon detail, this dry carbon mirror cap set is the ideal starting point. Autoclave-cured prepreg carbon is noticeably lighter than wet-lay parts, with outstanding long-term UV resistance. Compatible with every B48 and B58 engine variant — 320i / 330i / M340i (G20) and 420i / 430i / M440i (G22).

Key Features

• Prepreg (Dry) Carbon Technology: Pre-impregnated plies cured in an autoclave under high heat and pressure ensure homogeneous resin distribution and a more consistent weave.
• Left + Right Set (L+R): Full paired set — not a single side piece.
• G20 + G22 Dual Fitment: BMW 3 Series Sedan G20 and 4 Series Coupé G22 share the same mirror housing; the same cap fits both.
• OEM Motor + Heating + Signal Compatible: Factory mirror motor, heated glass and LED turn signal work normally.
• Plug & Play Installation: Remove the existing caps, clip the carbon caps on. No cutting or drilling.
• 2x2 Twill Carbon Weave: Authentic carbon pattern under a high-gloss UV-protective clear coat.
• UV & Wash Resistance: Long-life clear coat protects against fading and chemical wash detergents.

Prepreg (Dry) Carbon vs. Wet Carbon — Which Is Better?

Most aftermarket carbon parts are made using wet lay-up, where resin is applied by hand and cured at room temperature — leaving air voids and inconsistent weight. Prepreg (dry) carbon:

• Cured in an autoclave under high heat and pressure → a more consistent weave
• A controlled resin ratio → lighter and stronger
• The production method widely chosen in motorsport
• Minimal UV fading over years of use

Vehicle Fitment

This BMW G20 / G22 carbon mirror cap set fits the following models:

BMW 3 Series G20 Sedan (pre-LCI 2019-2022 + LCI 2023+):

• BMW 320i G20 Sedan — B48 2.0L
• BMW 330i G20 Sedan — B48 2.0L (255 hp)
• BMW 330e G20 Sedan (Hybrid) — B48 + electric
• BMW M340i G20 Sedan — B58 3.0L I6 (382 hp)
• BMW 320d / 330d G20 Sedan (diesel variants)

BMW 4 Series G22 Coupé (2020+):

• BMW 420i G22 Coupé — B48 2.0L
• BMW 430i G22 Coupé — B48 2.0L (255 hp)
• BMW M440i G22 Coupé — B58 3.0L I6 (382 hp)

Important notes:

• NOT compatible with the BMW M3 G80 or BMW M4 G82. M3/M4 use a different (more aggressive) mirror housing and carbon caps; separate M-car mirror cap versions are listed in our catalog.
• BMW G21 3 Series Touring and G23 4 Series Convertible compatibility — please confirm before ordering (very likely shares the same housing).
• Left and right pieces are different; do not mix.

Technical Specifications

• Material: Prepreg Carbon Fiber (2x2 Twill Weave)
• Manufacturing: Autoclave Cure
• Finish: High-Gloss Clear UV-Protective Resin
• Color: Natural carbon weave black
• Set Contents: Left (L) + Right (R) cap — 2 pieces total
• Origin: Europe

Installation Notes

Mirror cap replacement takes about 10-15 minutes. Professional installation is not required, but care is needed.

1. Fold the mirror fully down (using the interior fold button).
2. Press the lower clip of the OEM cap with your finger and lift outward.
3. Seat the carbon cap on the lower clip first, then press the upper portion into place.
4. Make sure you hear the clip snap; check that the carbon cap edges sit flush.
5. Repeat for the other mirror (do not mix L and R pieces).

Care & Maintenance

Wash with pH-neutral car shampoo. Apply carbon-safe sealant every 6 months. Avoid brush contact at automatic car washes.

FAQ

Does this cap fit both G20 and G22?
Yes. BMW 3 Series G20 Sedan and 4 Series G22 Coupé share the same mirror housing assembly; the same carbon cap fits both.

Same cap for pre-LCI G20 (2019-2022) and LCI G20 (2023+)?
Yes. G20 pre-LCI and LCI share the same mirror housing; this cap fits both year ranges.

Will mirror heating and turn signal still work?
Yes. This is a cap-only replacement; the heater, motor and LED signal remain factory and work normally.

Compatible with BMW M3 G80 or M4 G82?
No. M3 G80 and M4 G82 use a different, more aggressive mirror housing (M exterior mirrors). Our M-car carbon mirror caps are listed separately in our catalog.

Are left and right the same?
No. Left (L) and right (R) caps are different; both are marked in the package.

Shipping time?
In-stock items ship within 1-3 business days.

Warranty?
BYC Performance offers a 12-month manufacturer warranty on this product.

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium carbon fiber parts from leading European manufacturers and supplying them to the Turkish market. Our catalog includes BMW 3 Series carbon parts, BMW M3 carbon diffusers, Audi RS carbon hoods, Porsche carbon spoilers, and many more.