BMW M5 F90 2017-2024 CS Style Rear Diffuser / Rear Valance - Pre-Preg Autoclaved Carbon Fibre (Carbon Fiber) by CT Carbon - Fits LCI & Pre-LCI Saloon/Sedan Bumper Insert / Rear Splitter

Transform the rear of your F90 saloon with a premium CS-inspired rear valance in genuine pre-impregnated carbon composite. This CT Carbon upgrade delivers a sharpened, motorsport look with lightweight construction and a precise, high-end finish that elevates presence on the road and at shows.

Crafted from autoclaved pre-preg carbon fibre, this rear bumper insert is engineered for strength, rigidity and low weight. The distinctive CS styling gives the rear end a more aggressive, layered appearance while maintaining an OEM-plus aesthetic that suits daily use and performance builds alike.

Why choose this rear valance

• Authentic CT Carbon composite construction for quality you can trust
• CS-inspired design for a sharper, more purposeful rear profile
• Lightweight and durable autoclaved carbon weave for long-lasting performance
• Clean fitment for a premium, factory-style finish

Compatibility

Designed specifically for the BMW F90 M5 platform, suitable for both facelift and pre-facelift models.

• Model years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
• Chassis: F90 saloon
• Fits LCI and pre-LCI variants

In-house experience and feedback

We have fitted this rear diffuser in-house and the feedback has been excellent. Customers love the fit, finish and the instant visual impact. It is a standout upgrade that pairs beautifully with other aero pieces and performance exhaust systems.

Professional fitting available

Installation by a specialist is recommended for the best result. Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.

Search-friendly terms customers use

If you are looking for a rear splitter, rear bumper insert, carbon rear valance, performance rear undertray, CS look rear diffuser, carbon fibre rear trim or an aero upgrade for the F90 saloon, this CT Carbon part is the premium choice.

Note: Please check your vehicle’s bumper style before ordering to ensure correct compatibility.