F90 M5 Carbon Fibre Rear Boot Lip Spoiler BC99873 - Fast Road, Track Day, Show Car

For F90 M5s (2017-2023, S63B44T4 engine) that need a sharper rear stance without swapping the diffuser or fitting a full wing.

• Direct-fit boot lip - bolts on using OEM mounting points; no drilling, trimming or modification required
• Gloss-finish, hand-laid 2x2 twill carbon fibre - deep weave clarity, consistent resin saturation, no orange peel
• Lightweight rigidity improves high-speed rear-end composure - subtle but measurable on track day or fast road runs
• Fits all F90 M5 variants including Competition Pack and facelift models (LCI)
• Part number BC99873 - matches search terms: F90 M5 decat rear lip, F90 carbon boot spoiler stage 1, S63 fast road styling, show car M5 rear lip