Swift Springs USA - 2014-2020 BMW M4 - Sport Spec-R Springs

Built for track duty, these springs are designed to push the upper limits of the OEM damper valving. Track tested and tuned, for optimum performance, yet comfortable enough for a daily driver.

Specifications

• Front Spring Rates: 5.0kg/mm
• Rear Spring Rates: 13.0kg/mm
• Front Drop: -1.1"
• Rear Drop: -0.9"