H&R Street Coilovers STI (2008-2014) 3 Series Exhausts Product Features & Notes:

Product Features & Notes:

so you are sure to enjoy years of great performance and top notch durability

Ability to calibrate O² sensor for maximum accuracy

This unique system allows the amount of air vented to either recirc or atmosphere to be infinitely varied to change the venting sound like a stereo volume dial

H&R Street Coilovers STI (2008-2014) 3 Series Exhausts Product Features & Notes:Engineered for street and occasional track use, the Subaru STI H&R Coil Overs feature a fully threaded shock body (not an imitation sleeve over) that allows you to precisely dial in height adjustment to achieve optimum weight transfer, or simply get the aggressive look you've been looking for. Featuring H&R's exclusive dynamic damper technology, each shock for the STI is engineered to work in harmony with a progressive rate spring, together creating a