2022-2023 Yamaha YZ125 Race Spec 

Experienced the same thing.

But they don't sell their four stroke. They would rather just yap and hoot how much fun 125s are but stay part of the problem on their not fun four strokes

They have put a leaner needle in it.These are awful 1/4 throttle up.The leaner needle,richer main x2 and leaner x4 on pilot. These are really sensitive to elevation.I’d love to see a 36mm carby on this bike. Very,very good bike.

I got a 22. Im down to a 52 pilot to keep it from loading up when riding trails, 55 for mx. 3rd clip on the stock needle, 172 main for trails, 175 for hardpack track, 178 for sand.

@@Jake-rp9cv I have a 23. I’m running a 65 pilot, the leaner oem needle 2nd clip, 180 main, 1.25 air screw. I race it in the desert so I need that richer main jet for the sustained WOT.

@@russellgarcia8024 I ride a lot of sand and my piston wash comes out very nice with the 175. Im at about 600ft of elevation and ride from 50*F-80*F. But I have been going up to a 178 just to stay on the safe side. 65 pilot sounds crazy though.

@@Jake-rp9cv What mix and ratio are you using? I ride a lot of sand as well but I’m at 4,500ft dry desert air. I was running the 175 main but my piston wash was showing lean. The 180 has a better piston wash. I put a 55 pilot and it lean bogs so just went back to the 65. I bet a 60 would be best I just haven’t bought one. I have a JD kit for it that I tried but my setup is better. When I raced at sea level I installed a 190 for a 2 hour sand race and it was perfect.

Coming soon

@@davidpingree9254 hell yeah!