Here's a quick reference jetting chart for '01-'08 YZ250's It was made by taking Yamaha's manual recommendations and using the density altitude calculator to correct for altitude and temperature. -If you will be racing or running in open desert conditions, richen each jet by one size and the need...
What is the best trans gear oil for a yz250? - Yamaha 2 Stroke - ThumperTalk All Activity Home Forums Dirt Bikes Make / Model Specific Yamaha Motorcycles Yamaha 2 Stroke
What is the best trans gear oil for a yz250? - ThumperTalk
1987 YZ250 Vs. Newer models - Yamaha 2 Stroke - ThumperTalk All Activity Home Forums Dirt Bikes Make / Model Specific Yamaha Motorcycles Yamaha 2 Stroke
All Activity Home Forums Dirt Bikes Make / Model Specific Yamaha Motorcycles Yamaha 2 Stroke 1989 Yamaha YZ250 Restoration thread Facebook Twitter Youtube Instagram Pinterest Newsletter
I've read through the powervalve governor mod discussion for the YZ250X, but am curious if people have had success modding a regular YZ250 powevalve, and if so, what settings are recommended for woods riding. I've seen that with the X, people just drop on of the washers and find it improves low-e...
I race desert on my 2009 YZ250.. Today I opened it up next to my buddy who was on an '09 250f.. Well, we were both 5th gear pinned and were at the same exact speed, bar to bar.. Is this due to my jets?? Or do I need to go to a higher gearing? It feels like I top out at around 60, I mean this is j...