H&R 03-08 BMW Z4 E85 Sport Spring Suspension>Torsion Bar Key There is no clamp load

There is no clamp load deflection as found in a pressed metal type cover

a straight cut inner barrel

This Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing

For those who have purchased our Axle-Back system or GM Performance rear mufflers and are looking to upgrade with a 2

6% over its closest competitor

H&R 03-08 BMW Z4 E85 Sport Spring Suspension>Torsion Bar Key There is no clamp loadSport Spring kits are H&R's number one selling product. Enhance the look of your vehicle with a reduced fender well gap. H&R'sport Springs lower the vehicle's center of gravity and reduce body roll for better handling. The progressive spring rate design provides superb ride quality and comfort. A lower wind resistance signature will make the vehicle more streamlined and improve gas mileage. If you are only looking to improve one part of your vehicle's