BMW F30 340i Coilover Suspension Kit - Dinan - 16-18: a focused suspension upgrade for RWD F30 sedans that sharpens handling and stance.

Built around Dinan’s Performance Spring Set, the kit lowers the 340i about 1 inch front and rear to improve geometry while retaining comfort. Springs are CNC-wound from high-tensile chrome-silicon wire, shot-peened, and preset for durability. Rates—about 25% stiffer up front and 34% in the rear—reduce squat and dive, curb body roll, and enhance steering feel and grip. Works with both conventional and factory electronic shocks. For best results, pair with the matching Dinan Ride Quality and Handling Kit to preserve travel and achieve the intended drop. Not compatible with xDrive or non-sedan body styles.

Features

• Approx. 1 in. drop front and rear
• 25% front / 34% rear spring rate increase
• CNC-wound, shot-peened, preset springs
• Works with OE and factory electronic dampers

Questions on fitment or setup? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We serve Austin, Texas and the Los Angeles, California area with professional installation and customization services at both locations.

Ordering 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