May 6, 2025 · The legendary YZ125 has been in production for 51 years, earning a special place in the motocross community thanks to its longevity and the pure joy it delivers on the track. It’s the perfect …

Nov 5, 2015 · Hi group! Does anyone here know the YZ125 jetting specs? Supposedly revised from earlier years. Asking as I have a 2022, with the GYTR jetting setup, but still have a severe lean bog.

Aug 9, 2010 · 2005-2010 Yamaha YZ125 Rev Pipe And Round Silencer Price: Pipe $255.00 in raw finish, $276.00 for plated, silencer $111.00 Weight: 5.25 lb They said: The new DEP YZ125 Rev …

Oct 1, 2006 · Any insight on what may have caused the power valve pin backing out and not catching the power valve spring?? 27 hours since it was part for a new OEM piston. I assume the press fit of …

Jan 27, 2011 · All the tests say that the 1989 Yamaha YZ125 was an improvement over the 1988 Yamaha YZ125, but for me it isn't true. The 1988 had a wider power spread from Low to Mid, it had …

Mar 17, 2015 · I have a a few small bore and my most recent purchase is a new yz125. I wanted to get the same bars on all of them and I feel pretty comfortable with the feel of the new yz. I’ve never really …

Apr 1, 2008 · Yamaha YZ125 manual says 30:1 to many years and recommended Yamalube 2R. BUT Yamalube 2R up to 2018 (I think) has viscosity @40°C - 55 cst @100°C - 8,5 cst @150°C - 3,56 cst …

Jan 21, 2017 · Working on getting my YZ125 engine rebuilt, however I need some help in identifying what exact year the engine is. The engine serial number is 4SS-016630. Frame is a 2003, and I was …

Aug 25, 2023 · After spending more than 2 weeks adjusting the carburetor jetting on my new 2023 YZ125 I have finally found an ideal setting and want to share it with you.

Dec 9, 2015 · The Old School Moto section has me motivated to grab an early 90's late 80's bike and do a little restoration over the winter.