BMW M4 G83 & 4 Series G23 (G-Series) Convertible/Cabriolet Carbon Fibre/Fiber Rear Lip Spoiler - Gloss Prepreg Boot/Trunk Lip OEM+ M-Style | CT Design 2021+

Upgrade your G-Series convertible with a premium rear lip in genuine prepreg carbon

Give the back end of your drop-top a serious OEM+ makeover with this CT Design rear lip in high-gloss carbon. Purpose-built for the latest-generation BMW convertibles, it delivers a sharper, motorsport-inspired look while keeping things tasteful and factory-style. Lightweight, rigid and finished to a deep gloss, it’s the perfect finishing touch for enthusiasts who want clean, aggressive styling without compromise.

Compatible vehicles

• 2021-on BMW M4 G83 Convertible
• 2021-on BMW 4 Series G23 Convertible

Key benefits

• Premium prepreg carbon construction for exceptional strength-to-weight and a true performance aesthetic
• High-gloss clear finish for that wet-look depth and long-lasting shine
• Vehicle-specific profile that follows the boot line for an OE-quality fit
• Subtle yet aggressive rear-end styling upgrade with an M-inspired look
• Durable, rigid and lightweight for a quality feel and long-term reliability

Important: Supplied with protective rubbers to be fitted to your boot lid. These prevent contact when the roof is being operated, as shown in the final product image. Please ensure these are installed during fitting.

Why this rear lip

This CT Design carbon piece delivers that sought-after OEM+ vibe: a clean boot lip profile that sharpens the tail without looking overdone. We’ve fitted these for customers and on our own cars, and feedback has been consistently positive on the fit, finish and overall quality. If you’re chasing a premium carbon rear lip spoiler for your G83 or G23, this is the one to choose.

Ideal search terms

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Professional installation

For a seamless result, we recommend professional fitting. Book your install with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.