Detailed Description The original Take-Apart Coil-over System for Sport-Compact cars. This system has been refined over thousands of racing miles. Take PROGRESS technology to the track, and build a winner! Short Struts: 30mm shorter strut bodies for lower ride heights, improved ride quality and traction. Polyurethane Components: polyurethane Short Stops allow additional wheel travel. New strut top bushings and spring isolators also included. Take-Apart Design: Strut tops are threaded for easy revalving. Custom valving is simple to install for road racing and drag racing. "how-to" video available. Big Bore Size: Large 35mm piston and twin-tube cellular gas construction for consistent damping. Threaded Spring Perches: Ride Height adjustable 1" - 4". Detent locks collars in position every half turn. No lock ring necessary! Complete Systems: Includes Race Springs, Struts and necessary hardware. Finally available! The ultimate Coil Over kit for the Scion xA and xB from Progress Technology. After extensive research, development and testing it's finally available! Exceptional quality and design from a company we've come to expect nothing less from. We have worked closely with Progress Technology to help develop an exceptional coil over kit that is both versatile and affordable. This kit utilizes the current rear suspension design and a full front coil over design to allow the range of ride height to be one of the best around. This kit comes complete with a pair of adjustable rear spring perches and performance springs, and a full replacement Coil Over setup for the front along with adjustment tools where applicable and installation instructions. This kit will conservatively allow 1 to 3 inches of drop. A more aggressive drop of around 4 inches is available for show purposes. This kit will allow a rolling ride drop of around 2.75 inches to be set for driving and still be very comfortable without any issues. Availability: Ships in 5-7 business days.