Printed truck V2: PLA springs

I designed some springs ment to be printed in PLA, ABS, PETG, Colorfabb XT or similar harder plastic, it'll improve performance on hard surfaces and gives you the option to have printed springs without buying expensive Ninjaflex!

Driving video with both Ninjaflex and these springs:
https://www.youtube.com/watch?v=oX5-9GBl7pc
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You can find the other V2-compatible parts here:
Frame: http://www.thingiverse.com/thing:1503418
Cab: http://www.thingiverse.com/thing:1533678
Rear axle: http:/