The S-Tune Enhanced Handling Upgrade comprises height and damping adjustable, inverted strut coil-over suspension with upgraded top mounts. The struts feature 4 settings to adjust damper rates, giving the ability to 'tune' the suspension package to individual requirements. The coil springs are firmer than standard which increases the handling performance of the car as well as allowing a lower ride height giving and aggressive stance. The height of the vehicle can be set to 22mm lower than standard for WRX and 25mm lower than standard for STI. A helper spring is also included on the rear strut. The adjustable spring platforms allow the vehicle height to be adjusted 30mm for off-public road use only. The redesigned strut mounts utilise a stiffer rubber compound to improve ride and handling. Both springs and struts come in STI's trademark 'cherry red' colour for instant recognition. Note: This kit is recommended for use on tarmac surfaces only due to the lower suspension height, harder damping and stiffer spring rates. Use on rough road surfaces and or gravel/dirt surface roads is not recommended.