Maxton Design Side Skirts for BMW 5 Series G30 G31 M Sport 2017-2020 – Side Skirt Extensions, Sill Extensions, Rocker Panel Side Blades & Diffuser Splitters (Saloon/Sedan & Touring/Estate) ABS Plastic, M Pack Aero Kit

Maxton Design Aero Sill Extensions for BMW 5 Series G30 G31 M Sport 2017 to 2020

Give your 5 Series a sharper, lower and more purposeful look with these Maxton Design rocker panel extensions. Tailor made for the G30 saloon and G31 Touring with the M Sport package from 2017 to 2020, these side blades integrate cleanly with the factory lines to deliver that coveted OEM plus finish. If you are chasing a premium visual drop, crisper side profile and motorsport-inspired styling that still looks factory, this is the go-to upgrade.

Built from tough ABS plastic, the side diffusers balance strength and flexibility for daily road use. Fitment is impressively precise and the overall finish is excellent. Our team at MJ Modifications has installed these on customer vehicles and feedback has been consistently positive for both the fit and the transformation in stance.

Why this upgrade

• Vehicle specific for BMW G30 and G31 with M Sport styling 2017 to 2020
• Durable ABS construction designed for real-world driving
• Cleans up the sill area and visually lowers the car for a more planted presence
• Designed to complement M Sport bumpers and factory trim
• Supplied with fixings and an installation guide for a straightforward bolt-on
• Delivered with a protective film to help prevent handling marks before fitting

Compatibility

BMW 5 Series G30 saloon and G31 estate with M Sport package, model years 2017, 2018, 2019, 2020.

What you receive

• Left and right sill extensions
• Mounting hardware
• Fitting instructions

Fitting manual: Side Skirt Diffusers Installation Manual

Installation

Professional fitting is recommended for best alignment and secure mounting. Book expert installation with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Material and care

Manufactured from ABS, chosen for its impact resistance and stability. Each piece arrives with a thin protective film. Test fit first, then remove the film to reveal the clean finish.

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