125 YX Manual primary clutch top mount electric start.
This is a new old stock engine we just found it hidden away.
125cc
4 speed manual all down rotary “locking type when moving in 4th”
54mm bore 54mm stroke
Big valve head 27mm inlet 23mm exhaust valve
Gen type single phase 2 yellow wires
Rubber mounted engine mounts
These are nicely built engines
Only odd part with this engine is that it has M8 exhaust studs not 6mm