Hi all, am posting on behalf of a friend. He saw a DR125 on sale from a bike shop recently, 4 stroke bike. Went through sites and forums but can't seem to find anything much about it. Would appreciate if anyone who know this bike can share some info.

1. can be use for offroad?
2. power wise?
3. any mods can be done to improve power?
4. any areas/problems to look at before purchasing?
5. is it a problematic bike?

Thanks in advance!