BMW 1 Series F40 M135i xDrive & M Sport 2019-2025 Maxton Design V3 Gloss Black (Piano Black) Side Skirts/Extensions (Diffusers) | Side Splitters Sill/Rocker Extensions ABS

Gloss Black V3 Sill Extensions for BMW 1 Series F40 M135i and M Sport 2019 onwards

Give your F40 a sharper, lower look with these gloss black V3 sill extensions from Maxton. Designed specifically for the BMW 1 Series F40 M135i and F40 M Sport, these sleek aero blades run the length of the rocker panel to deliver that factory-plus styling enthusiasts love. The result is instant road presence, a lower visual line and a clean, premium finish that ties in perfectly with other exterior upgrades.

Highlights

• Vehicle-specific for BMW 1 Series F40 M135i and F40 M Sport 2019 onwards
• Deep gloss black finish for a seamless, high-end appearance
• ABS construction for strength, flexibility and everyday durability
• Consistent fit and finish from an established styling brand
• Pairs perfectly with front splitters and rear corner spats for a complete look

What you receive

• V3 sill extension blades, left and right
• Mounting hardware
• Installation guide

Fitment

Fits only BMW 1 Series F40 M Sport 2019 onwards and BMW 1 Series F40 M135i 2019 onwards.

Material and finish

Manufactured from ABS plastic with a high gloss black surface. ABS offers the flexibility needed to handle daily driving while maintaining a crisp, premium look.

Installation

Professional fitting is recommended for correct alignment and secure mounting. For expert installation, choose MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Fitting manual: View Maxton Design fitting guide

Proven on our builds

We have fitted these V3 sill extensions on customer cars and our own projects. Feedback is consistently positive on fit, finish and the immediate visual impact. A go-to styling upgrade for the F40 platform if you want a more aggressive side profile without overcomplicating the design.

Protection and care

Supplied with a thin protective film to prevent marks in transit. Test fit first, then remove the film before final installation to reveal the flawless gloss surface.

Search-friendly terms

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