Recent content by Thumper_650

I had a 2 stroke once that would do the same thing and it ended up being a loose connection in the spark plug boot. Just an idea.

The general consensus is the YZ 400 and 465 are better motors. Less vibes and easier to tune. The 490 is notorious for either pinging if jetted correctly or fouling plugs if jetted fat. My 490 has had the head re-shaped and some port work and I can honestly say mine runs great and only goes...

Does a 350 twin have more hp than a 490 single? Just curious if u seen the 2 race or where u were coming from on this. My 490 blaster isn't stock so it's not a good comparison, but no stock banshee can come close to beating me. Not even close. But like i said, that's not stock against stock...

+1 on the pipe as Paul mentioned. Mine is a 490 and i tried a blaster pipe. It works, but not very well. Took it out yesterday and I could out run a Z-400 and stay with a raptor 660. FTZ just got a different pipe builder. I just got off the phone with them and he said he might be able to do the...