BMW 4 Series F32 F33 F36 Matte Black Side Skirt Extensions, M Performance/M Sport Style Rocker Sill Extensions/Side Splitters - Fits Coupe, Convertible & Gran Coupe 2013-2020 - Aero Side Blades/Rocker Panel Trim - CT Carbon BLAK

Stealth black rocker extensions for the 4 Series. OEM plus look. Big visual impact.

Give your coupe, cabriolet or Gran Coupe a sharper, lower and more purposeful profile with these CT Carbon BLAK range sill extensions. Engineered for a precise fit on the 2013 to 2020 4 Series platforms, these aero side blades deliver that M Performance inspired presence without the hefty dealership price. Tough, great looking and ready to transform your exterior styling.

Compatible models

• 2013 to 2020 F32 2 door coupe
• 2013 to 2020 F33 convertible
• 2013 to 2020 F36 Gran Coupe

Why enthusiasts choose these sill extensions

• Sportier stance and road presence with subtle aggression
• Seamless, OEM plus aesthetic that pairs perfectly with front splitters and rear diffusers
• Crisp fitment for F32, F33 and F36 body lines
• Durable construction and a clean, non gloss black finish that works with any paint colour

Finish and style

• Finish: matte black, stealth look
• Style: M Performance inspired aero side blades and rocker panel trims

Trusted by MJ Modifications

We run these on customer cars and they are a firm favourite in our workshop. Feedback is consistently positive for appearance and fit, making this one of the best value exterior upgrades for the 4er.

Professional fitting available

Want it installed properly first time. Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search friendly terms

F32 sill extensions, F33 rocker panel trim, F36 Gran Coupe aero blades, black side splitters for 4er, exterior styling kit upgrade, M Performance look skirts, 4 Series body kit add ons, BMW coupe side blades, convertible sill covers, Gran Coupe rocker extensions, stealth black aero.