H&R 15-20 Subaru STi Sport SpringSport Spring kits are H&Rs number one selling product. Enhance the look of your vehicle with a reduced fender well gap. H&R Sport Springs lower the vehicles 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 vehicles

Increased rev limit with power all the way to redline

Check connector to make sure it is FLAT with 3-prongs

Engineered to perfection

and Intercooler Upgrade for a total engine output of 395HP / 352LB-FT

Thread size: 12x1

Effectively this stiffer mount will allow more of your engine's horsepower to make it to the wheels rather than being lost to wasted movement

MFR Part #   10635/1

as shown in figures 3 and 4

these mounts will hold your transmission in place for a lifetime

as well as a replacement lower torque arm and lower bushing insert

06D-109-601-M / 06D109601 M / 06D 109 601 M / 06D109601M

Equivalent to p/n 1H0422155E