2009 yz 450 f problems ?

hi looking at purchasing a very clean and well looked after yz 450f. can anyone tell me if this model bike give the gear box  problems the earlier models gave

also do they have any other problems ? 

thanks

Over all a good bike. I have about 150 hrs on mine in 2 yrs. of racing harescrmbles and weekend trail riding.Enginewise no problems.Banged it into gear a few times no tranny explosion yet.Have the valves ,valve seats checked every yr.my exhaust valves needed a little shim so far.Only problem so far is the inner cartridge of the forks,blew both free pistons to bits twice before i saw how to rectify the problem.ordered the aftermarket aluminum ones .For motocross its fun,harescrambles its a handful! Its heavy!Coming from a 2 stroke cr 250 to a 4 stroke 450 was a shock .No more instant pow. Just instant giddy up and go .Jumping is a breaze.Clutch handled plenty of abuse,was still within specs .piston was good needed new rings. Hope this helped.   Phil

hi looking at purchasing a very clean and well looked after yz 450f. can anyone tell me if this model bike give the gear box problems the earlier models gave

also do they have any other problems ?

thanks

No gear box problems. The stock pipe is junk and the cdi timing curve is tame. Dr D pipe and an 06 yz450 cdi and it's a whole knew motor

Gear problems.  Hmm.

 

Here's a couple of gears from an '06 with 300+ hours on it.  They were swapped out for the WR 4th and 5th.  I don't see a gear problem.

 

4thwhl_zps6d7a9e9d.jpg

 

4thpin_zps02dcd706.jpg

thanks for the replies guys , I bought it last night   !     very happy :)

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