We have introduced a new rear swaybar for the Mazda 3 and here are some specs:
Stock Mazda 3 Rear Swaybar:
Tri-Point Mazda 3/Mazdaspeed 3 Rear Swaybar:
Stiffness: 750lbs/inch (hole #1)
825lbs/inch (hole #2)
1000lbs/inch (hole #3)
Swaybar O.D: 1.25"/32mm
This is link above is to a GB we are holding if anyone is interested.