We designed these rear coil springs to provide increased weight transfer for quicker elapsed times. They are sold in matched pairs. Each spring is identified with a PN:. The PN: determines whether the spring is a left side or a right side (see chart). A letter “L” after the PN: denotes the spring is to be used on the Left (driver’s side of the car). While a “R” signifies the spring is for the Right (passenger’s side of the car). You will notice that the passenger side spring is shorter. This is because it has higher lbs. per inch rate. The increased rate eliminates the twisting motion that occurs on initial launch. This allows the car to launch straight and help it transfer weight more evenly, while pushing the right rear tire into the ground for a harder launch.
- Ford Mustang (non i.r.s.)
- Computer designed
- Compress at a controlled rate at launch
- Right-side is stronger than left
- CNC-wound from Chrome silicon
- Replaces stock OEM springs
- Two per package with black painted finish.
