Front & Rear Sport Coil Spring Conversion Kit/Cup Kit - H&R and Bilstein

Everyone knows the E53 has been notorious for the air ride system to fail. Even BMW technicians will tell you it's not if your air bags will fail, its when. Repairs can become fairly costly as well, with each bag plus labor potential costing you hundreds and hundreds of dollars. Not only that, but the repairs never seem to be permanent, whether its a sensor going off a leaky air bag or the compressor. Get rid of these problems for good, with this Coil Spring conversion kit. Utilizing H&R Sport Springs this kit will give your ride an average lowering height of 1.2-1.5" providing a lower center of gravity for improved handling without compromising comfort. For any issues you may face with your vehicle, ECS Tuning has you covered. 

ECS has paired Bilstein B6 Heavy Duty shocks and struts with H&R's Sport Spring for excellent handling that will withstand the test of time. Includes all spring pads and front strut mounts for a bolt-in install. 

See Kit Contents tab for what's included.

**Note: Installing this kit will trigger a Self-Leveling Suspension Inactive Light**