Had an opportunity to trade my 19 rmz-250 for a 23 KTM 125sx. I know the first-year bikes had their issues, but at this point I think the issues have been figured out by the enthusiast and aftermarket. The bike had 18 hrs on it so I figured I'd ride it for a few hours to see how I liked it then do the head and top end. Went up 1 spring rate in the rear and threw some new MX34's on it. Also did the Moto hose T stat delete. Even gaining 10lbs from the previous model and being down a little on power it was a blast to ride. Fresh Wossner piston went in, and I ordered the TSP head and erm package to wake it up. The ERM is amazing for the price and all the features that it has. Now that I could mess with the fuel and timing, I grabbed some VP T2 fuel. Night and day power difference. I was getting a check engine light from time to time for the CPS sensor. Ordered up a new one and got the billet Pinit racing housing. Installed it with some yamabond for good measure. Picked up a Pro Circuit 304r silencer during black Friday to add a little more power down low. Tried 13/50 gearing but it was having a tough time recovering in the mud and the track I ride worked better with the stock 13/51 gearing.
If I can get time this year, I’d like to do some Jday races and with the dead engine start I prefer the older start stop buttons. With the ERM you can set the white or green map, so I took the map switch off
Seems like a great option for the off road races. Lightweight and manageable power. All I've ever done is moto and once did a GP race that was 90% MX track and the rest was simple woods trails. I'd love to try more of those hybrid tracks.
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Definitely! If you where local to the series I’d definitely say to check it out.
How is the power delivery on these EFI 2 strokes? People online say they’re more linear than the carb 2 strokes, but still not like a 4 stroke. Curious to hear your take after coming off a 250F. Thanks!
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