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Morty

2007 wr450f Horsepower

5 posts in this topic

Anyone have any idea what this bikes output is rated at with rejetting, airbox mods, Yz throttle stop and uncorked stock exhaust. I tried searching but saw no actual numbers. I am going from a 2003 DRZ400e model with about 41 hp and 20 lbs heavier to this bike which I get next weekend . Dealers gonna do the mods for me and was curious how much power gain the new bike is gonna have,thanks. Morty!

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Anyone have any idea what this bikes output is rated at with rejetting, airbox mods, Yz throttle stop and uncorked stock exhaust. I tried searching but saw no actual numbers. I am going from a 2003 DRZ400e model with about 41 hp and 20 lbs heavier to this bike which I get next weekend . Dealers gonna do the mods for me and was curious how much power gain the new bike is gonna have,thanks. Morty!

I'm not really sure about the exact amount, but I've heard somewhere in the neighborhood of 50hp.:eek:

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With an aftermarket pipe, they will break 50 hp.

An otherwise stock uncorked WR 450f puts out about 47 hp.

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Yeah, an Aussie mag here has done an '07 project bike, it pumps out 52hp

with a WB Alloy pro 2 exhaust and usual free mods. It cracked out about 47hp with just free mods and about 40hp stock.

You can see that aftermarket exhausts are a beneficial gain on this bike, with the pipe adding over 10% power to it.

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