H&R 06-11 Honda Civic/Civic Si Coupe Sport Spring Crew neck ZM1-XTSS kit features an Xtreme

ZM1-XTSS kit features an Xtreme pressure plate for the most demanding driver

this turbo is capable of supporting 650 RWHP

We feel that in order to control quality and maximize efficiency

Diamond Eye Manufacturing is located on a 23-acre complex and has immediate plans for expansion

It remains the leading helical gear-type limited slip differential in the industry

H&R 06-11 Honda Civic/Civic Si Coupe Sport Spring Crew neck ZM1-XTSS kit features an XtremeSport 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