CLutch Probs!!! HELP?

[Warrior-mx]

I have an 02' Yamaha Warrior that was a 350 for five years. And now its a 400 With a Stage 3 Hotcam and 10:1 comp. piston. And I think the original 5 year old oem clutch is giving up. I can feel it getting slower as i hit mid to top end. WHen i got it back 4 days ago. And after i broke it in is when i realy noticed this. And if this is wat the prob is What is the best AFFORDABLE cluth thats not no fancy "slipper" cluth jus and beefed up ordinary kind. YOuR help will be great appreciated!!!!!
Benji

P.S im racing in IRONMAN so this is y its important!

[1fst400]

get an oem clutch replacement kit.

[4TraxRider]

I'm almost sure you'll need stiffer clutch springs at the very least. If the stock clutch plates are that old I would also buy new fiber plates as well. EBC and Tusk sell cheaper clutch kits, whereas Hinson would be a more expensive solution.