My e-revo brushless edition build

[Chadworkz]

The extra length is nothing more than the spring being a different weight, with a different thickness coil and a different number of coils...none of the springs are meant for either the front or the rear, any of them can be used in the front OR the rear, it all just depends on how you like your suspension setup.

In 99% of all cases, you run heavier springs in the rear and lighter springs in the front, since the rear of the truck is heavier and needs more support.

The front and rear shocks are exactly the same; the bodies, shafts, etc. are all the same length, and all 4 shocks are identical. The only differences are the variable items, like; the pistons, oil, & springs.

What little difference there is in the length of the springs you have pictured is nothing, and which spring you use on which end should be chosen by weight, not length.