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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Tough Call: YZ-250 vs. YZ-450F
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[QUOTE="Micahdawg, post: 1153849, member: 21668"] I kind of missed the 450F in your title, so sorry for steering it to the 250F. Fact is, the rule "250F's = 125 and 450F's = 250" is wrong. Two strokes are not twice as efficient, more like 2/3's again efficient (due to a lot of wasted fuel charge). So a 250's equivalent would be more like a 417F and a 125's would be a 208F. The 250's still do a good job of fighting with the 450F, but man, the 125's just get slaughtered by the 250F's. I think the technology from the 450F just doesn't get lost as much when moving down to the 250F (that some extra revs can't overcome) whereas the 125 is a huge jump down from a 250 two stroke. Almost all of the low end power disappears. the 250F is still a very FAST BIKE. It should have been evident to anyone who watched the Jeremy McGrath Invitational where Josh Grant's lowly Honda 250F nearly whooped Kevin Windhams big 450! Even today, if you look at the top 10 racers in each SX class, the Lites are running within a second of the Big boys. Not just a couple guys either, but down the line. Two big considerations for me when choosing an F bike would be (1) 250F being lighter and more flickable, and (2) 450 possibly having longer engine life due to decreased revs (unless you are an animal). But I really haven't done a whole lot of research into the F's since I'm one of the few holdouts who still like my smoker. [/QUOTE]
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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Tough Call: YZ-250 vs. YZ-450F
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