top speed??

Okay, this is my first post.

I juat bought an 05' YZ450F i know it has a four speed tranny, but what i don't know is how fast it should go. if any body knows, write away

Thank's and god bless

Just bought a GPS and mounted it today. I'll let ya know soon but I'll bet about 80ish stock in the dirt. I have different gearing though 14/48.

The overall gearing on the '04 and '05 is the same. The difference in the secondary sprockets is due to the higher gearing in the '05 primary gears.

The 4 speed with stock gearing will run about 80 mph, depending on traction.

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