Yz250f transmission problem

Rebuilding my sons 20 yz250f tranny right now. $2000.00 to do it myself with a new crank and all new bearings. The 3rd gear oem pinion is different from the old one so maybe they figured it out.
Good luck finding parts the pinion and axle were on back order for 3 weeks before we got them.

Yesterday broke my yz250f 2022 transmission for a 3th time in 80h. Will definetly sell the bike and get fc250 2023

I had 2 Yz250fs, a 2021 and 2022, never had any transmission problems at all. You using the shifter as a foot peg? God damn.

Its called a drive chain, not a Banjo string.

yea but i never had any issues with my other bikes before...

My son got a ride with a local Yamaha team. I used to work for Yamaha 2004-2009. Loved everything about the brand.

Everyone warned me about gearboxes and cam chains. But nope got the new 250f. Gear box lasted less than 20 hours. Spoke to the factory junior team and they basically said you have to be careful with your shifting. No suicide shifting and keeping your foot away from the lever. They are just very delicate.

One of Australia’s factory riders told me they would do a gear box every SX race because of the whoops.

Sadly we had the new 125 this year also which had its own problems. Got unlucky.

But yes the 250 gear boxes are an issue and have been for a number of years. 100% if you ride with the gear box in mind you won’t have a problem. But it’s hard.