TEIN S-Tech Springs are an excellent step towards suspension tuning.They offer approximately a 1.5 inch drop for a more aggressive appearance.This product comes with a 1 year limited warranty.Spring length is guaranteed not to sag more than 5mm and to be clear of any manufacture defects (see limited warranty for more details). One year limited warranty. High-grade material adapted to improve guaranteed satisfaction. Rubber spring protector sheet to prevent noise (most applications).