H&R 06-11 Honda Civic Si Sedan Sport Spring 1971-buick-riviera-esi1789112 5" diameter main piping is

5" diameter main piping is situated more closely to the body than the stock configuration

Durability & Fuel Economy

Banks Ram-Air Superiority: This is no filter-on-a-stick

Seven programmable pages including four Main pages

H&R 06-11 Honda Civic Si Sedan Sport Spring 1971-buick-riviera-esi1789112 5" diameter main piping isSport 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