YS91SRS Engine
The engine had new front and rear stainless steel bearings about half a gallon ago from RC Bearings in the States.
It has just been rebuilt with a brand new piston, ring and liner, and has never been run since this was installed.
The engine will require a full run in as a new engine would.
The anodising on the side of the head has come off from rubbing in the heli's frames but otherwise its in very good condition as the pictures show.
A very powerful, regulated engine.
The box is included

Exhaust/Muffler/Silencer
The silencer is the Hatori 946, designed bearings for the YS91SRS engine. This is also in very good condition with no dents, only light scratches and marks from general handling.
Included is a brand new set, still in the packet, of fluorine O-rings.
The small silicone mounts and the matching washers have been trimmed on the bottom for clearance in the heli they were mounted on, not an issue but though i'd best mention it.
The box is included.

Spares Included-
NEW YS91SR/YS91SRS O-Ring Set YS5895
Used YS91SRS Conrod
NEW Quick UK 60-90 Size Alloy Exhaust Gaskets. Pack of 5
NEW YS91SR Backplate Gasket S5117 and Used YS91SR All-Alloy Backplate (For use with backplate sensor on YS91SRS)
NEW YS91SR/YS91SRS Backplate O-Ring S9117
NEW YS91SR/YS91SRS O-Ring Set YS5895

Answer-RC’s Mugen MBX6 Full SP Bearing Set 24pc are superb quality and specced to be longer lasting and able to cope with higher rpm. Excellent quality and superb value. These Answer-RC bearings use 1 x rubber seal and 1 x metal shield. This is to be installed with the rubber seal facing the dirt. The metal shield offers less resistance therefore reducing load on the bearing giving a higher max rpm. 1 x Complete set of 24Bearings for the Mugen MBX6 Excellent value by comparison to the Associated OEM bearings. Smoother – higher rpm and longer lasting.