BMW M440i Suspension Kit - Dinan - Supplemental Ride Quality & Handling Kit - '21-'26. Purpose-built for the 2021-2026 BMW M440i xDrive, this kit complements Dinan performance springs to refine ride quality and sharpen handling.

It replaces the factory bump stops with tuned progressive-rate pieces that preserve suspension travel on a lowered car. Allowing full compression helps prevent bottoming, improves control, and lets the springs deliver more consistent mechanical grip. OE-quality materials and Dinan-specific tuning deliver reliable results when paired with the matching spring set.

Features

• Application: 2021-2026 BMW M440i xDrive
• Includes four tuned progressive-rate bump stops
• Maximizes compression travel; reduces bottoming
• Optimizes effective spring rate for added grip
• Approx. 8.4 hrs install by itself; minimal added time with springs

Questions or need fitment guidance? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We offer installation and customization at our Austin, Texas and Los Angeles, California area facilities.

Purchasing 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