Revolution Performance Performance (RPM) set out to design the perfect spring to compliment the Mazdaspeed 6's stock suspension.

Having analyzed the Mazdaspeed 6 suspension, we determined that the ideal set of springs would provide a moderate drop while increasing the front spring rate by 18% to 330 lb/in and increasing the rear spring rate by 22% to 250 lb/in.

This results in springs that greatly minimize body roll, yet don't limit the suspension travel so much that ride comfort is jeopardized.

Spring Rates: 330# front / 250# rear
Drop: 1.1 inch front / 0.75 inch rear