2016年2月6日 · I am currently racing two yz 125s offroad in hare scrambles with great success, and great fun. Leave the yz motor alone! It's about perfect in terms of the compromise of power output, reasonable durability, and cheap and easy maintenance.

2006年12月13日 · Incredible bike in the woods and in the air. I went 2 bigger on the rear sprocket, and v-force-3 (didn't need to but I felt like I have to buy some mod for my new bike.) My 250f was no slouch. Full upgraded exaust, intake, suspension, ect. I hands down like the 125 (pretty much stock) better both in the woods and the track.

2014年9月24日 · For your YZ 125, IMO, all you need, is the following: 1. Appropriate protection (hand guards for sure, skid plate and pipe guard depending on the terrain) 2. Suspension revalve for offroad--makes a HUGE difference. Expensive, but worth it. 3. budget some money to keep your clutch in good repair. You are going to be abusing it. 4.

2006年4月9日 · A 250f wiil not pull harder out of corners than a 250 2-stroke. U are not comparing apples to apples. 250f vs. 125, 250f will win. 450f vs. 250, 450f will win. yeah, but.....this year 250 2 strokes are allowed to race against 250 4 strokes, may not be apples to apples...but it is the same class, locally the 250 2 strokes are winning that class....

2021年4月5日 · I'm looking into purchasing a YZ 125 but know Yamaha specifically has a higher seat height than the others. I'm around 5'7-5'8 and was concerned on how this would fit me, if anyone here can help me out let me know below!

2024年4月26日 · I've only needed to deal with a few cranks over the years, and almost all of them were street bikes, but I have to say I was impressed with the hot-rods crank kit I used in in my 06 yz125.

2021年2月10日 · Simply explained without going too technical, when a 2-stroke 'loads up', it is either -when you don't run the engine hard enough to keep combustion temps high, meaning excess premix oil accumulates in the bottom of the crankcase or …

2015年7月4日 · The ratio, rather than the brand of oil, is what is important, as it affects your fuel/air mixture. The bike comes from the factory jetted for 30:1. It will run better on 30:1 than another ratio, as that is how the engineers set it up. Don't worry about the brand of oil. As long as it is high performance 2 stroke motorcycle oil, it will be fine.

2011年5月26日 · Compared to other 125's the Yamaha has great bottom end power in stock form. My 05 125 had both the pro circuit pipe and vforce reeds when I bought it and I ended up switching both back to stock. The pipe didn't suite my riding style and the reeds made jetting a little more difficult and then eventually chipped.

Posted July 2, 2016 I was riding my yz 125 the other day and was working fine and I shut it off for a second to move a branch and went to restart and and it wouldn't go it turns out there was no spark.