broke a bunch of teeth off rear

7 replies to this topic
  • 78sharpshooter

Posted March 13, 2006 - 04:01 PM


I got my used radiator and started the bike ('01 YZ426) up and could not help but ride it on the street just for a little bit. When I was finished I saw that there were a dozen or so freshly broken teeth on the rear sprocket. The sprocket does look a little worn but was wondering if this was due to something else.

  • B86_Racer

Posted March 13, 2006 - 04:25 PM


Usually it's due to a worn out sprocket/chain and also if your chain was not adjusted properly.

  • 642MX

Posted March 13, 2006 - 04:26 PM


Sprockets shed teeth when there wore out. Just replace it along with the chain and front sprocket.

  • yamaharider324

Posted March 13, 2006 - 04:33 PM


one word......HORSEPOWER!!!! lol but i doubt it can do that with just crackn' the throttle open

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  • sirthumpalot

Posted March 13, 2006 - 04:59 PM


As said above, worn sprockets will loose teeth, aluminum more easily than steel. Sounds like it's time for new chain and sprockets.

  • NYMXer

Posted March 13, 2006 - 05:05 PM


Replace the whole set and forget about it for the rest of the season.

  • kid on a 426

Posted March 13, 2006 - 05:52 PM


go steel they last WAAAAAAAAAYYYYYYYYYY longer

  • 642MX

Posted March 13, 2006 - 05:57 PM


go steel they last WAAAAAAAAAYYYYYYYYYY longer

Steel last about three times as long on my bike.

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