abobi its a CG250 jainshe engine (the company making YBR for Yamaha PK) its a 229.8cc in actuall creates some where around 18HP and 18Nm of torque...
The bike flats (11k+ RPM) out at 80~90kmh due to Big Tawa Sprocket in rear end, but the way it reaches 90kmh is like a Lightening bolt from hell.
This engine is 31cc more powerful then the engine I have in RP and it do not need radiotor and all those complicated sensors to keep it cool.. its kind of a Big Bored CG125 engine.
The Difference is it has one Down 4 up gears and it was ripped out of a Trail bike which had a major accident ald it was completly mal formed, but engine was new inside so it was best deal for me.