Exhaust for Sym Jet4 50cc

Hi all,
I'm after a new exhaust for my 2012
Sym Jet4 50cc.
Ideally I'd like a cheap one - mine is blowing and I'll need to MOT it soon.
Can anyone recommend a good place to get one? I've had a look on eBay at sym exhausts but they don't seem to say if they'll fit my bike.
Thanks

 

Is it a gy6?
Scooter motors are pretty generic really. One exhaust will fit about 20 different models

 

Try https://www.chinesemotorcyclepartsonline.co.uk/
They have a helpline which I found proved helpful and stuff came NWD.

 

Sorry to be dim - what's GY6?

 

Four-stroke single-cylinder in a near horizontal orientation that is used on a number of small motorcycles or scooters made in Taiwan, China, and other southeast Asian countries.

 

Ah, ok - it is a four stroke single cylinder, but no idea if it's horizontal. Does anyone know??