Which spring rate do you have on your aftermarket shock ?
Could you please tell me your weight and your ride usage (track / road / both) ?

Thanks ;-)

Racetech web site says I'd need a 18kg spring... 2kg more than stock isn't it ?

 

The Racetech evaluation questionairre is generally spectacularly accurate.

 

I'm running a penske cbr954 sprung for a 210 rider. I weigh 165 and ride agressive solo on the street.