welsh.Z.S.
Member
Hi guys is there much difference between an ec125 and an ec200 ? What's the most I could bore my 125 to whilst keeping the reliability ?
125 Vs 200
- Thread starter welsh.Z.S.
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Zman
Platinum Level Site Supporter
I have owned both and still have a 125 as a spare bike. They both make similar peak power but the 200 has a lot more low end and midrange. The 125 weighs between 15 and 20lbs less than the 200 and you can feel that.
If you already own a 125 there are things you can do including a big bore kit to make more power. On my 125, I changed from the 38mm carb to a 35mm PWK carb (from an older kx125) and that helped the throttle response and it still revs to the moon. I cut the head to fix the squish and to increased the compression and that made a big difference in the bottom end and mid range. Even after those two changes the 200 still has more midrange and bottom end. I weigh 250lbs so I am not a typical 125 rider ;-)
If you already own a 125 there are things you can do including a big bore kit to make more power. On my 125, I changed from the 38mm carb to a 35mm PWK carb (from an older kx125) and that helped the throttle response and it still revs to the moon. I cut the head to fix the squish and to increased the compression and that made a big difference in the bottom end and mid range. Even after those two changes the 200 still has more midrange and bottom end. I weigh 250lbs so I am not a typical 125 rider ;-)
motopsycho87
New member
All the local enduro races here tend to be won by 125's and 150's... But they're also ridden by spring chickens!
Anders
Gold Level Site Supporter
People here have bored out to 144cc. That's a quite common mod to many 125cc motors and I would assume quite well proven. Above that is unknown territory.
