If you think that my 12/51 gearing was installed for hills and would actually help, you don't understand hills and tight singletrack. I can't believe all the jerkwads here that get their panties in a wad because people do things differently than they think they should be done. Like there is only one way ? What is this, 1984 ? Lord of the Flies ? Get a brain, think outside the box for once. I understand hills and tight single track way better than you do, buddy. You prove that in nearly every post you make. For starters, I know the RIDER makes way more difference than the bike, a concept you seem to struggle with. Do you need to watch that video of Ivan Tedesco on a XR650L toying with a CRF450 on a MX track again? But do tell, why DID you gear your bike so low then, if not for climbing hills and such? The stupid reason you're putting YZ cams in is so you can 'hold 3rd gear on hill climbs and not have to downshift' right? Trying modulating your clutch instead, you'd be amazed at what it can do. And your idea of 'thinking outside the box' is ignoring common sense and NOT tuning your FI, despite everyone and their brother telling you that's the first/best thing you can do for your bike. But oh no, you know better than all of them, FI does not need mapping at all, the bike needs YZ cams! That's not 'thinking outside the box' that's cutting off your nose to spite your face. I'll ask you the same very valid question I asked you before that you ignored: what are those cams going to do for you exactly? How is that going to make you any faster? You didn't answer because you can't, or won't admit the real answer: just because you want to. It won't make you faster, guaranteed. There is simply no way a newer rider like yourself even needs a STOCK 450, let alone a heavily modded one to go fast, especially in tight woods, or even truly handle that much power in the first place. Unless of course you're one in a million, some phenom rider that at middle age and with little experience, is better, faster, and quicker than men half his age that have been riding since they were in diapers. Yeah right. I've said it before and I'll say it again: I'd bet my left nut you'd be faster on a 250F than your 450, unless all you ride is groomed fire roads or wide open desert. Any kind of truly tight, technical terrain and a 250 is WAY easier to ride fast, unless you're a pro-caliber rider, and you're not.