kick starting problem

[BiDo]

i got a kick starter on my yfz but sometimes after riding for a bit it gets really hard to kick and wont wanna start up. I got a link here that has a asv cluth and brake combo with the hot start/ compression realese thing. Is there anything else i would need to get in order to install this or is there anything else i can do to help kick start my bike?!

http://www.motosport.com/offroad/productDetail.php?prodId=119849&nav=&sMMY=

Thanks