[hayesy]

Hi all

I have a 2013 SYM Jet 4R Naked which has a 1PE39QMA motor in it.

I am keen to get modifying but I am struggling to identify parts that suit (particularly a big bore kit).

I believe that this engine may also be used in some Kymco scooters.

I have spent many fruitless hours searching on the net, but this seems to be an unusual engine.

The reason for my post is to seek your advice about whether there is any compatibility between this engine and the 1PE40QMB motor that seems to be very common.

Some of the things that I do know:-
Bore = 39mm
Stroke = 41.4mm
Displacement = 49.4cc
Wrist Pin = 12mm
Compression Ratio = 7.2:1
Drive Belt = 18mm

Otherwise, any ideas on where to seek performance parts would be welcome.

Cheers

Paul