get the luck to grab one of those comet black spring and give it a try today,no trail riding just some engagement and full shift baslt,the black comet sux,at least with HPD race mods it really feel like your're on a
trail boss 250,it lauch around 3200 rpm,and that sux with the race pipe,
all that with around 54 g of weights,anyone have a clue on a stiffer comet primary spring than the black one?thanks for any inputs.

 

If their website doesn't say, Aaen's new clutch book has a chart for the Comet primary.