2009年5月23日 · Update: I raced 3 hours today through sand, rocks, more tree roots than I can shake a stick at and a bunch of long straights, I'm proud to say the KTM300 doesn't hold a candle to this YZ300. I played on the KTM for about 15 minutes and ignoring ergonomic differences, the YZ just simply pulled earlier, harder and longer than the KTM.

2022年6月1日 · Yup jumping to 24 per this enduro21 article. Says that the prototype 300 they showed is ready for race testing and will be testing it very soon.

2011年4月12日 · Wow that is really cool. I am definitely considering this for the kid's YZ. At $660 it's a lot cheaper than the 300 kit for my KTM 250 which runs ~$1000

2019年4月12日 · I’m interested to hear your jetting specs for anyone with a YZ250 with a bigbore kit fitted. I have recently put an Athena 293 kit on mine and the word is that you will need to jet it leaner than the standard 250 settings. So far I have had to go the other way as my 250 setting was way too lean f...

2010年2月26日 · YZ300 kit. Porting to make power smooth (between mx and woods porting) case porting . Head cut for pump gas. 48 tooth sprocket . ok my first ride after the breaking was hindered by my horribly set suspension. The power was different, The bike even sounds different, the first time i started it it has more of a pop/more aggressive sound.

2017年7月31日 · YZ300 kit gearing suggestions. By Hillzy, July 31, 2017 in Yamaha 2 Stroke. Share More sharing options...

2023年9月7日 · Hey I just started to watch the YZ300 kit that Jeff Slavens is building. I saw a comment asking about putting your Hitlis system on it but Jeff said it didnt fit. The video (part 1) he explains the PV wont open all the way thus causing it not able to rev like 250. So a different part is used/not used to compensate.

2018年1月9日 · I have my Athena yz300 on my 2004 bike. I am at sea level and the temperatures are about 55-75 degrees. I am at sea level and the temperatures are about 55-75 degrees. The bike has a Keihin from the 2000 year model, vforce reeds and FMF Gold series exhaust with Shorty FMF silencer.

2018年4月30日 · The YZ300 has a lot more torque (so much so that I may gear it up), but it signs off noticeably earlier then the stock YZ250. I ride MX, intermediate level. Looking for recommendations on a pipe to help the top end/overrev without sacrificing too much of the low and mid range power.

2011年6月21日 · So about a month back I picked up a very clean 2002 YZ250. Already had the suspension re-done for a guy my size and had a couple other goodies such as ASV levers, large tank, etc. On the same day I also picked up another 2002 YZ250 that was a basket case. Figured I could part it out if necessary ...