Here are some engine specs on the 140cc .

Ported cylinder head,with large valve diameter 23mm ex 27mm inl.
High comp piston.
Balanced crankshaft.
Race profiled camshaft.
Mikuni 28mm carburettor,with ported matched intake.
32mm exhaust outlet.
Katico inner rotor kit,with alloy backing plate.
Cdi unit unlimited,with super spark coil pack.
4 speed manual ,race pattern N,1,2,3,4.
Hydraulic Clutch system with clutch on main shaft.
Full billet alloy dress up kit

Transmission ratios.
1st 3.272
2nd 1.937
3rd 1.350
4th 1.043


Dion.