I am offering a used YS91 and MP2 exhaust for sale. I got the engine second hand and have subsequently replaced the front and rear bearings with ceramics from RC-Bearings. The cylinder liner, piston and ring are nearly new and will need to be run in further as they have less than a gallon on them.
Now for the bad points:
1.) There is a small chip on the crankshaft intake port, the kind that would be made by locking the crank with a toothbrush or something.
2.) While installing the cylinder liner it hit the piston and there is a very small dent at the outer edge of the piston crown. Liner and ring however are in perfect condition.
3.) Cylinder head has had some of it's black anodizing removed by rubbing on the fan shroud of the Extreme it was in.
Also included is a used but functional MP2. Engine will be sent boxed and includes the check valve.
I am looking to get £100 shipped within the UK or $190 shipped to the US.