Basic Carbon Gloss Black Side Skirts / Sill Extensions for BMW 4 Series F32 F33 LCI Facelift 2016-2019 Coupe & Convertible (M Sport) - M Performance Style ABS Rocker Panel Side Splitters/Blades Pair for 420i 430i 440i

Gloss Black Sill Extensions for BMW 4 Series F32 F33 Facelift by Basic Carbon

Give your BMW 4 Series a lower, wider and more purposeful look with these gloss black sill extensions from Basic Carbon. Tailored for the facelift F32 coupe and F33 convertible, they deliver a premium, performance-inspired appearance that ties in perfectly with M Sport styling. We have installed these on customer cars and our own builds, and the feedback has been outstanding on fit, finish and overall transformation.

Why enthusiasts choose this upgrade

• Deep gloss black finish that matches existing performance trim for a seamless factory-plus look
• ABS construction for strength, impact resistance and year-round durability
• OEM-like alignment with crisp edges for a clean, professional result
• Instant visual drop that sharpens the side profile and enhances road presence

Compatible vehicles

• BMW 4 Series F32 coupe facelift 05-2016 to 12-2019
• BMW 4 Series F33 convertible facelift 05-2016 to 12-2019
• Suitable for 420i, 430i and 440i petrol models with M Sport exterior

What you receive

• 1 x left sill extension
• 1 x right sill extension

Material and finish

• Material: ABS
• Finish: High gloss black

Fitting and installation

Professional installation recommended for best alignment and long-term results. For a hassle-free service, book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Compatibility check

We verify fitment before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm suitability for your vehicle.

Manufacturer and warranty

Manufacturer: Basic Carbon

Warranty: Basic Carbon 2 year warranty

Search-friendly terms

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