2009年9月24日 · What I recall reading is that every year they have increased the HP output of the bikes, with the 08's and 09's being around 52hp. The other thing that has changed is the way they put out that power, the 08 might feel more mellow than an 03, but it has more total HP output.

2005年9月12日 · I converted KW to HP, and got 59.1HP. ... '06 YZ450F HP and Torque Theme . Light Mode (Default) Dark Mode .

2009年7月17日 · Just wondering if anyone has any info on what a big bore kit will do for a 2008 yz450f, im thinking about doing one over the winter to get some more power on the cheap as opposed to the whole head work, cams etc. I currently have a DRD full system and rejetted carb, but looking for more Ummph whi...

2012年3月5日 · Yes correct, it is the 2nd lightest and 2nd most powerful but it puts out the best hp per its own weight. For me, the 2012 YZ450F is the best buy 450F in terms of power, and in terms of its reliability, more than anything.

2013年8月24日 · The engine dyno's WAS ON fresh VP 4.4, but stock mapping. The fuel IS worth power, customer brought it with that fuel in tank. The power indicated in the graph is at the peak power point of the kawi - not the yamaha. Yamaha made one more peak hp than indicated on the right legend of the chart.

Mar 17 Blueknight1967 changed the title to 2004 Yamaha YZ450F HP and torque specs; S.O.A.N.Z. Posted March ...

2009年6月19日 · I ride a 2007 yz450 and blew my engine a few weeks ago via a valve head snapping off and basically destroying my whole engine, so I have ordered a hot rods 3mm stroker crank and Athena 480cc big bore kit since it is not much …

2009年1月29日 · I was wondering if anyone knows anything about the Athena 485cc Big bore kits for the YZ450f 2006, Are they reliable, how much HP?

2007年8月30日 · 58 hp with a wide curve-----that sounds like a honda ,----thats really good. i have been playing with a 450 yami and got ahold of some yamaha cams. and by playing with different lobe centers i got the bike to 57 hp, but the curv was not flat like a honda, -----i settled for 55 hp with a flat honda like curve and the bike was way better and ...

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