These clutch kits will not work with the stock Mazdaspeed3 flywheel. All ACT clutch kits for the Mazdaspeed3 include the ACT streetlite 16lb performance flywheel.

ACT Heavy Duty Street Performance Clutch Mazdaspeed3 07-09	ACT Heavy Duty Street/Strip 6 Puck Clutch Mazdaspeed3 2007-2009	ACT Heavy Duty Street/Strip 4 Puck Sprung Clutch Mazdaspeed3 07-09
ACT Heavy Duty 6 Puck Solid Clutch Kit Mazdaspeed3 07-09	ACT Heavy Duty 4 Puck Solid Clutch Kit Mazdaspeed3 07-09