BMW M440i Performance Air Intake - Dinan - Cold Air Intake G2x/G4x Mx40i PEX - `20-`26
BMW M440i Performance Air Intake - Dinan - Cold Air Intake G2x/G4x Mx40i PEX - `20-`26
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BMW M440i Performance Air Intake – Dinan Cold Air Intake G2x/G4x Mx40i PEX (2020–2026). Built for the M440i to increase airflow, sharpen response, and add turbo sound.
Dinan enlarges the entire lower airbox, delivering 60% more volume and a 40% larger filter (115 vs 82 in²). Patterned fender-side openings feed the box alongside the factory duct without raising turbo inlet temps in testing. The semi-open layout and resonator delete deepen induction sound and sharpen response. On a stock M440i, gains of +9 WHP and +8 lb-ft accompany 58%+ more flow than factory. Fits G2x/G4x Mx40i models.
Features
- 60% larger air box; 40% larger filter (115 vs 82 in²)
- 58%+ more flow; max gains +9 WHP / +8 lb-ft (stock)
- High heat-deflection PEX; compatible with factory bracing
Questions? Call 512-982-9393 (TX) or 562-981-6800 (CA). Installation and customization available at our Austin, Texas and Los Angeles, California area shops.
Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
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