The BMW M4 combines race-inspired performance, aggressive styling, and everyday usability in a true M car package. Upgrade your M4 with Dinan performance products, including ECU tuning, intake systems, exhaust upgrades, suspension components, and supporting hardware engineered to increase power, sharpen handling, and deliver an even more exhilarating driving experience.

Dinan suspension & chassis hardware embodies the ethos of European performance engineering—precision-machined components designed to optimize grip, control and ride integrity. From lightweight monoballs and upgraded toe links to fully matched spring kits and sway bars, each piece is built to enhance the driving experience while preserving the composure and refinement of your BMW or Mercedes.