Unlock the gas on the handlebars
lose some weight
there are much better wheels than razor. razor doesnt make any good scooter products
blue and red
but a engine in it
Either increase the size of the front sprocket or decrease the size of the rear sprocket. This will change the gear ratio and make the scooter faster. Although you need to kick harder to start the scooter. Also, I do not know of any sprocket mods available online so you would probably have to get it custom made which may be pricey.
the brake
The battery from a the scooter can be removed. This would still allow the scooter to retain movement while keeping its top speed relatively low.
An improved flow of air and fuel mix will make the scooter faster. You can do this with an aftermarket exhaust.
Go downhill
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about 40 mph. you will really have to make it up to your mom to get this baby.