Yamaha neos 4t 2014

[oddjob]

Hello
I bought my son a Yamaha neos 4t which does between 28 - 30 mph and now he has had a years experience with it he’s been asking me what I could do to make it go faster I know I could buy him a faster bike but he loves this one so I was wondering if anyone could recommend what I would need to do

[aeroxbud]

A big bore kit is very expensive. Not like the Neos two stroke.
You can get more speed by fitting this. www.pedparts.co.uk/product/6830/polini-lambda-emulator-yamaha-aerox-50cc-4-stroke if its after 2018. It lets you remove the speed limiter and lambda sensor.
A good variator will help. www.pedparts.co.uk/product/6852/polini-hi-speed-variator-yamaha-4-stroke-50cc
If it's before 2018 I think you only need the variator and a better air intake.

[oddjob]

Hi
Brilliant thanks
Sorry forgot to put the year (2014)

[oddjob]

Hi in the variator description it says this
For Euro4 scooters with a lambda sensor a Polini lambda emulator is compulsory to achieve the correct performance
So would I have to buy the polini lambda
emulator
Also did see this on the website as well
www.pedparts.co.uk/product/8484/voca-unlimited-ecu-yamaha-neos-50cc-euro3?ga4List=
Any good

[aeroxbud]

Yours is a Euro 3 scooter so I don't think you need the emulator.
That unlimited ecu would certainly help top speed.

[FrankenMech]

Try to find a larger displacement scoot.