Back surprise spring 82mm - 3-Dots offers a mixture of modern & linear characteristics. The reduced design helps you to achieve lower ride height on high traction songs. The springs are slightly progressive, but under more compression modification faculties to be more linear. This provides excellent feeling and feedback in most various track conditions. These XRAY surprise springs, like all other XRAY springs, are manually calculated, chosen and matched into pairs to make sure correctly equal size and damping traits.