[Storkdork]

please explain in laymans terms the difference between these spring types please...

[Storkdork]

forgot my other question, Pro kit or Sportline...... differences??

[Monkey Boy]

Specific rate: the spring rate stays the same no matter how far you compress the spring.

Progressive rate: the further you compress the spring, the more resistance(higher spring rate) you get.

Progressives allow you to have a smooth ride over small bumps while still reducing body roll when you dive hard into a corner.