My question..

Anyone know if 2011 ms3 springs fit a 2009 mazda3?
Has Anyone tried it?

 

Mazdaspeed are expensive and i believe Eibach Pro-Kit Performance progressive springs are basically the same. Front is 1.4" drop and rear is 1.2" drop. If you go more you may get into shock, camber issues. Part # for your car is 5545.140
They are currently 10% off from Eibach.
Eibach 5545.140 Pro-Kit Performance Spring Kit : Amazon.com : Automotive
2004-2009 Mazda 3 Coil Springs - Eibach 5545.140 - Eibach Pro-Kit Lowering Springs