What age is my tony kart chassi

I can’t tell from the number, but the model, Viper is their rental kart model.
Is it a rental kart
No it’s not the rental model it’s the tkm viper model
There’s no standard markings for OTK that indicate production year.
Have to call OTK and give them the numbers for them to tell you.
Since it’s a TKM chassis identifying it can be a bit different as they don’t have to be homologated with CIK.
I assume you’re in the UK? You could try strawberry racing, otherwise go direct to the source at OTK, see if they can help.
I would think Tal Ko might be able to tell you from the TKM Number too.