Maxton Design Gloss Piano Black Sill Extensions / Rocker Panel Side Skirt Splitters Lips Diffusers Side Blades for BMW 5 Series 5er G30 G31 M Sport 2017-2025 Saloon Sedan & Touring Estate Wagon

Gloss Black Sill Extensions for BMW 5 Series G30 G31 M Sport 2017 onwards by Maxton

Transform the profile of your 5 Series with premium gloss black sill extensions from Maxton. These lower body side blades sharpen the stance, add road presence and deliver that clean OEM-plus look enthusiasts want on a G30 or G31 M Sport, both Saloon and Touring. If you are searching for rocker panel extensions, side skirt lips, side diffusers, sill trims or side blades for the BMW 5er, this is the upgrade that ties your exterior styling together.

Precision manufactured in ABS, the deep gloss piano black finish sits beautifully against the sills and pairs perfectly with front splitters, rear diffusers and boot spoilers to complete a cohesive aero package. Supplied ready to install with a fitting kit and manual, no painting is required.

Why choose these sill extensions

• Made specifically for BMW 5 Series G30 G31 with the M Sport exterior package, 2017 onwards
• High-shine gloss black finish for a premium factory-style appearance
• Durable ABS construction designed for everyday road use
• Pre-finished surface, no paintwork needed
• Includes mounting hardware and step-by-step fitting guide
• Enhances the side profile with a lower, sportier look and cohesive aero styling

Compatibility

Fits only BMW 5 Series G30 and G31 M Sport 2017 onwards, Saloon and Touring models. Not suitable for non M Sport bumpers or trims.

What you receive

• 1 x pair of gloss black sill extensions
• Complete mounting kit
• Fitting manual

Quality and finish

Manufactured from ABS plastic for strength and flexibility. Each piece arrives with a protective transport film to guard the surface. Remove the film after installation to reveal the flawless high-gloss black finish.

Installation and fitting

Professional fitting is recommended to achieve the best alignment and finish. MJ Modifications in Warwickshire offers installation services. Request a fitting quote: info@mjmodifications.co.uk.

Fitting manual: Download the Maxton side skirt guide

Tried, tested and loved

We run these on our own builds and have fitted them to numerous customer cars. Feedback is consistently excellent on fitment, alignment and the deep gloss finish. They complete the look alongside other styling parts and deliver instant visual impact.

Popular search terms

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