BMW M4/4 SERIES G83/G23 CARBON FIBRE SPOILER - CT DESIGN

Transform the rear of your BMW cabriolet with a premium carbon boot lip

Give your G-series convertible a serious OEM-plus upgrade with the CT Carbon CT Design rear lip. Crafted from genuine pre-preg carbon fibre and finished in a deep, high-gloss clear coat, this lightweight aero piece adds a sharper, more purposeful look to the tail without being over the top. The 2x2 twill weave matches other factory carbon packages beautifully.

Why owners choose this upgrade

• Dry carbon construction for excellent rigidity and low weight
• Autoclave-cured pre-preg for a crisp weave and premium finish
• High-gloss, UV-resistant clear coat for long-lasting clarity and shine
• Precision moulding for clean alignment and an OE-style fit
• Subtle, motorsport-inspired profile that enhances the rear stance

We’ve fitted this on customer cars and the feedback has been superb: consistent weave, tidy edges and a factory-level look that instantly elevates the back end. It’s the ideal finishing touch for enthusiasts wanting a sleek boot lip, decklid spoiler or rear blade that looks right at home on a modern BMW cabrio.

Vehicle compatibility

• 2021+ BMW G83 M4 Convertible
• 2021+ BMW G23 4 Series Convertible

Important note for convertibles

Protective rubbers are included and must be fitted to the bootlid to prevent contact with the spoiler when operating the folding roof, as shown in the product images.

Professional fitting available

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

Common search terms

BMW G83 rear lip, BMW G23 boot spoiler, BMW cabrio boot lip, carbon decklid lip, carbon rear wing, gloss carbon tail spoiler, 2x2 twill carbon, pre-preg carbon rear lip, CT Carbon UK, performance styling upgrade, BMW convertible rear blade, OEM plus aero, BMW G-series carbon upgrade.