I have a 2011 YZ450F. At 150 hours on the bike, I replaced the clutch basket with a Hinson Steel basket and replaced the clutch plates with a Wiseco kit. I am now experiencing massive amounts of clutch fade when I get into a technical situation. In less than 30 seconds I can go from the clutch engaging when lever is furthest from the bar to having no clutch with the lever pulled to the bar. I am thinking it's just that the wiseco kit isn't that good but my brother said it might be possible that the steel clutch basket won't dissipate heat as quickly causing the clutch plates to be hotter as well. What do you guys think?