Does anyone know what the stock primary clutch spring is rated on a 99 Scrambler 500 4X4? Also, would a EPI pink primary spring rated at 0/161 give me any noticeable performance gains on an otherwise stock (except K&N) bike? Or is there another spring you would reccomend? Thanks for your help[img]i/expressions/face-icon-small-cool.gif[/img]

 

Try you a red EPI or a white Polaris and you will notice a big improvement.

 

I do belive that the pink was origanly creted for the vforce because at about 40 you hit a wall and the acceleration drops...idk how well it would do in a scrambler