Ultra-lite: This spring is ideal for someone looking for ride quality. The spring is about 3% softer than the sport spring. It also uses a hollow-core wire for less total weight and inertia.

Sport Spring: This spring is ideal for someone who would attend some kind of track event every once in a while, in addition to aggressive street driving. This spring has a similar design to the Ultra-Lite, but uses a solid core wire giving it the additional stiffness.

Steeda Sport Springs lower approximately 1" front / 1.25" rear. $229.99

These are ideal for those who do not want to sacrifice daily driveability. Good for lowering, maintaining ride quality, and improving handling and nose dive.

• Steeda Ultralite Springs lower approximately 1" front / 1.25" rear. $239.99

These are ideal for those who will be building a weekend warrior. Good for lowering, somewhat maintaining ride quality, and improving handling and nose dive. Light weight solid core wire design for strength, and less inertia.

Many online Mustang forums have been abuzz with chatter from dissatisfied customers who, after installing aftermarket springs in their new 'stang, were treated to unsettling clicks and pops resulting from the mis-match of the new springs with the Ford factory spring seat - a plastic part installed to help reduce NVH, which was designed to accept a properly clocked spring. When the springs are a half turn off, they create a torque on the plastic seat that causes the seat to separate and fail, resulting in annoying clicking and popping sounds
If you were unaware of spring clocking and it's importance with the new Mustang, you are not alone. Many spring manufacturers, even some of the biggies, missed this detail, but not Steeda. Thanks to our participation in the SEMA Technology Transfer Program, we received the correct specifications directly from the Ford engineers who designed the vehicle.