Performance M
BMW M5 F90 Side Skirts / Side Blades / Sill Extensions by Maxton Design – Gloss Black ABS Rocker Panel Extensions | Aero Side Skirt Diffusers | 2017-on | Mounting Kit Included
BMW M5 F90 Side Skirts / Side Blades / Sill Extensions by Maxton Design – Gloss Black ABS Rocker Panel Extensions | Aero Side Skirt Diffusers | 2017-on | Mounting Kit Included
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
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Maxton Design Gloss Black Sill Extensions for BMW F90 M5 2017 onwards
Transform the profile of your F90 M5 with Maxton Design gloss black sill extensions. These sleek side blades deliver a clean, aggressive OEM-plus look that visually lowers the car, sharpens the side lines and ties in perfectly with other exterior styling pieces. Made from ABS, they are lightweight yet tough and designed specifically for the BMW F90 platform for a consistent, high-quality finish.
Searching for BMW F90 M5 side blades, rocker panel extensions, sill protectors, side skirt add-ons, aero skirts or body kit side trims for your 2017-on M5? This Maxton Design set is the go-to choice for enthusiasts who want premium styling, excellent fitment and a deep gloss black finish. Mounting kit included for a straightforward install.
Compatibility
Designed for: BMW F90 M5 - 2017 onwards.
What you receive
- Left and right gloss black sill extensions - ABS construction
- Mounting kit
- Installation manual
Why this upgrade
- Deep gloss black finish for a premium, factory-style appearance
- Model-specific design for the F90 M5 for consistent fit and finish
- ABS plastic for durability and flexibility to tolerate everyday use
- Mounting kit included for a clean, tidy installation
- Supplied with a thin protective transport film - remove to reveal the fresh gloss surface
Real-world feedback
We have supplied and fitted these Maxton Design sill extensions to numerous customer cars and on our own builds. Fitment is consistently good, the gloss finish is excellent and the upgrade makes a noticeable difference to the M5’s side profile. Owners love the OEM-plus look and the way these pair with front lips, rear diffusers and other Maxton components.
Fitting and support
Professional installation is recommended to achieve the best alignment and finish. For expert fitting, choose MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.
View the Maxton Design fitting manual
Notes
- ABS construction as specified by the manufacturer - flexibility helps the product tolerate some pressure
- Remove the protective film during fitting prep to reveal the gloss black finish
Search-friendly terms
F90 M5 sill extensions, BMW M5 side blades, rocker panel extensions M5, gloss black side spats, aero side skirts BMW F90, body kit side trims M5, Maxton side skirt add-ons, BMW M5 sill protectors, performance styling M5 F90, side skirt lips BMW saloon, exterior aero BMW M5.
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