IfYoureNotFirstYoureLast
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I wanted to get a little more speed out of my yard kart so I swapped to 18lb valve springs to pick up some extra rpm before valve float. I was pretty pleased with the results just from swapping the springs. Here's a video link showing the difference between the factory predator springs and the 18lb springs.
https://www.youtube.com/watch?v=rszqAYKk_TM&app=desktop&persist_app=1
https://www.youtube.com/watch?v=rszqAYKk_TM&app=desktop&persist_app=1

