I am going to rebuild my raptor 660 and i have purchased and high comp piston kit and i am going to replace the valves also but i was wondering what else you would recommend to replace while its torn apart

 

with a top-end rebuild usually piston kit and bore job to match it, head gasket, base gasket all the rubber o rings and dowels,valve seals, valves and springs if there a little worn,if your looking to add a little performance this is another good time to do so, put a cam and some better springs and valves like kibblewhites if you want.

 

the piston kit comes with all the seals and gaskets and if i order new valves how would i get new seats for them and how much would you think new springs and all that would cost