ive had good luck with my barnett clutch im probly close to 80hp when i take it out to the hill i beat on it pretty good its been in there for couple seasons i use all the hd springs hinson clutch basket and hp80/85 oil
when i was putting my shee together i figured the cheapest way to go faster was to lose the extra 60 pounds i was carring around it deffinitly made a big differance
id go with the pro circuits they work great on stock motors and even better on modified ones i had them on my old set up once i had the cylinders dune ported cool head v2s stock carbs with the pros it was a running mofo sand dune ridding only
on my 04 i extended the stock arm 2.5 in with some 1/4 flat bar with good results the stock shock still worked good just needed a longer chain and brake line
i went to my yama dealer the other day and told the parts guy i need 160 main jets for my 35mm keihen carbs on my shee and he said why would you get 160 if 200 is stock how about you guys
get some 22x11x8 10 paddle skat trak haulers but get them from a performance quad shop thats a skat trak dealer so you could get the b&b cut on the tire alot lighter for racing i got mine from ris designs in so cal id go with the +8 on the swinger