iON Performance Sport Spec Springs for the Mazda Protege 5 and ES Sedan:

Fits both Sedan and Hatchback.  Lowers ~30mm (1.18") front and rear.  Designed to suit the condition of North American roads.  Front springs are linear while the rears are progressive, thus maximizing the performance of the suspension while allowing comfortable ride in cruising conditions in addition to increased handling agility when pushed.  It will allow your Protege to have a more neutral feel and less understeer at the limit.  Our suspension will not cause the rear wheels to rub even with the car loaded with passangers and gear.  We suggest these to be used with either factory Tokico struts or any aftermarket strut to provide maximum performance.

MSRP: $299US + shipping.

iON Performance Race Spec Springs for the Mazdaspeed Protege and MP3:

Fits both MSP and MP3 (will work with Protege 5/ES as long as uprated struts are used).  Lowers 41.3mm (1.625") front and 19.1mm (0.75") rear.  Designed for North American roads, and maximizing the very good factory suspension.  Front springs are linear while the rears are progressive, thus maximizing the performance of the suspension while allowing comfortable ride in cruising conditions in addition to increased handling agility when pushed.  It will allow your MSP or MP3  to have a more neutral feel, less understeer as well as throttle on oversteer at the limit..  Our suspension will not cause the rear wheels to rub even with the car loaded with passangers and gear.  We suggest these to be used with either factory Tokico struts or any aftermarket strut to provide maximum performance.

MSRP: $349US + shipping.