Performance M
Maxton Design V2 Gloss Black Side Skirts / Rocker Sill Extensions Diffusers for BMW 3 Series G20 G21 M Sport 2018-2022 – Side Skirt Splitters Lips Blades (Saloon/Sedan & Touring/Estate/Wagon) Pair
Maxton Design V2 Gloss Black Side Skirts / Rocker Sill Extensions Diffusers for BMW 3 Series G20 G21 M Sport 2018-2022 – Side Skirt Splitters Lips Blades (Saloon/Sedan & Touring/Estate/Wagon) Pair
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.
Couldn't load pickup availability
Gloss Black Rocker Extensions V2 for BMW 3 Series G20 G21 M Sport 2018 to 2022
Transform the side profile of your BMW with these Maxton Design V2 rocker panel extensions. Finished in deep gloss black, this pair of lower sill blades sharpens the stance, adds a lower, wider look, and delivers that clean OEM plus style enthusiasts want. Designed specifically for 3 Series G20 saloon and G21 touring models with the M Sport package, they integrate neatly along the factory sills for a premium, cohesive finish.
Why enthusiasts choose this upgrade
- Vehicle-specific fitment for BMW 3 Series G20 and G21 M Sport 2018 to 2022
- High-gloss black surface for a sleek, factory-style appearance
- V2 sculpted diffuser profile enhances the visual drop and side aero
- Supplied with fixings and an installation guide for a straightforward fit
- Durable ABS construction engineered for exterior use
Compatibility
BMW 3 Series G20 saloon and G21 touring with M Sport styling package. Model years 2018, 2019, 2020, 2021, 2022.
What you receive
- Pair of gloss black sill extensions
- Fitting hardware
- Installation manual
Fitting manual: Side Skirt Diffusers Installation Manual
Proven quality and finish
We have installed these on customer cars and the feedback is consistently positive. Owners love the precise alignment, the deep gloss, and how the V2 profile ties in with the M Sport lines without looking out of place. If you are after subtle aggression and a premium aesthetic, these Maxton Design sill blades deliver.
Material and finish
Manufactured from ABS plastic for strength with a degree of flexibility. Products arrive with a protective film to minimise transit marks. Remove the film after installation to reveal the high-gloss black finish.
Fitting
Professional installation recommended. MJ Modifications offers fitting at our Warwickshire workshop. For a fitting quote, email info@mjmodifications.co.uk.
Search-friendly terms
BMW G20 rocker extensions, BMW G21 sill extensions, 3 Series side blades, M Sport side lips, G20 G21 side aero kit, gloss black rocker trims, BMW 3er G20 G21 2018 2019 2020 2021 2022, BMW 3 Series saloon estate side styling, Maxton Design V2 rocker blades, BMW 3 Series body styling kit, side sill protectors, lower sill diffusers, side skirt lips BMW G20, touring side extensions, performance side aero BMW 3 Series.
Share
