H&R created the perfect suspension for the Subaru WRX STI that sees the street all the time and occasionally a race track or two. Street Performance coilovers have a great range of usability. Each STI coilover setup is precisely engineering together with matching spring rates and valving to make an extremely fine tuned setup for every application. The 2015+ WRX STI Street Performance coilovers feature a fully threaded shock casing which allows you to lower the vehicles height and change where you want the stance and center of gravity. H&Rs coilover kit will allow the vehicle to expose its handling potential in all situations and remain completely comfortable to drive on the street every day.