Maxton Design RD V2 Side Skirts / Splitters / Rocker Sill Extensions (+ Gloss Flaps/Winglets) for BMW 1 Series F20 5dr Hatchback M135i M140i M Sport 2011-2019 - Black 10mm ABS | Side Blades Diffusers M Performance Style

Maxton Design RD V2 Rocker Extensions with Gloss Winglets for BMW F20 1 Series M135i and M140i M Sport 2011 to 2019

Give your F20 1 Series a sharper, more purposeful silhouette with genuine Maxton Design RD V2 rocker panel extensions complete with gloss black winglets. Crafted from robust 10 mm ABS, these aerodynamic side add-ons deliver a clean motorsport look, a premium feel and long-term toughness for daily road use. We have fitted these on our own builds and many customer vehicles, and the feedback has been outstanding on fit, finish and durability.

Compatibility

• BMW 1 Series F20 M135i M Sport 5 door 2011 to 2019
• BMW 1 Series F20 M140i M Sport 5 door 2015 to 2019
• For cars with M Sport package side sills only

In the box

• Maxton Design RD V2 side extensions for both sides
• Gloss black flaps winglets
• Mounting hardware

Why choose this upgrade

• Thick 10 mm ABS construction for a solid, premium feel
• High impact and scratch resistance for real-world driving
• UV stabilised and weather resistant for UK conditions
• Arrives vacuum sealed with protective film
• No paint required out of the box
• Genuine Maxton Design with authenticity labels
• TUV MATERIALGUTACHTEN certified material

Finish

• Black main boards with gloss black flaps
• Also available from Maxton Design: 10 mm matte black, or 10 mm matte black with red core

If you choose to paint, use primer first.

Real-world results

These aero side blades add a crisp, factory-plus appearance that complements the M Sport styling on the M135i and M140i. The thicker material eliminates the flimsy feel found on thinner alternatives, and the gloss winglets tie in perfectly with other black styling pieces for a cohesive OEM-plus look. Customers consistently report precise fitment and clean edges.

Professional installation

We recommend professional fitting. MJ Modifications, based in Warwickshire, can install these for you. Request a fitting quote at info@mjmodifications.co.uk.

Search-friendly terms

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