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See how FMS customers are building their BMW platforms. Build inspiration, parts lists, install stories, and real-world combinations are coming together here.
G20 M340i / B58

Street-focused build path with intake, charge pipe, cooling, exhaust, and calibration.

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Dinan carbon-fiber rear deck spoiler for 2021–2026 BMW M3 G80, part D980-0031

Dinan G8x M3 M4 Carbon Fiber Rear Diffuser

$382.95Price
Excluding Sales Tax

Dinan carbon fiber rear diffuser accessory for BMW G80/G82/G83 M3/M4.

Request a quote before ordering. FMS Auto Performance confirms vehicle fitment and current availability before issuing an invoice. Include your vehicle year, make, model, trim, engine, and relevant modifications with your request.

    We'll verify fitment, check inventory, calculate shipping, and email you a secure payment invoice within one business day.

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