Gas gas ec 300 gearbox gears
 

Hi I have a gg ec300 I dismantled the engine and and I noticed something like this on the transmission I would like to ask if this is a big problem or need to be replaced.

Sorry f?r my bad english.http://leteckaposta.co/file/71648047...b3464871eea/cs

your english is ok, it's your photography skills that suck lol

Photo upload
 

Ok, I see you're still having problems with posting the pic.

When posting go down to the "Additional Options" section below the box you type in. Look for "Attach Files". Click on "Manage Attachments". Then click on "Browse" to locate the picture on your computer. Select your picture and then click "Open". You will return to the attachments window and click "Upload". Now, hit reply and your pic should show in your post.

Looks ugly :(

Wow, that gear is roached. I would replace it. I would also closely inspect the gear it mates with.

Mate that's right through the hardening and bits will fall off soon. Inspect every gear.

Either you have been unlucky with a badly manufactured gear or there has been some other stress, perhaps oil related in the past.

That damage is going to get worse and the bits of metal that fall off will wear or damage other parts in your transmission.

There are some used transmission gear sets on Ebay. You will need to check the part numbers to make sure they cross over to your year bike.

Thank you for your help.
On ebay I just found the whole clutch.
not what I need. I need primary gear 5 and primary gear 3and 4 and then those opposite.
What you say about this: https://www.enduropuro.it/shop/en/ch...c-250-300.html
I have gas gas ec 300 2002.