any unleaded gas is ok for racing you can jet and raise compression for racing gasoline for better performance
No
0.75 litres
Simple bike ? 10 speed bike? Ok. All you need to start is a torch, big hammer, crescent wrench, welder,some tires w/ nobbies and any 2 stroke engine.
you can ride a dirt bike at any age
no
No
you would need about a 125cc 2 stroke
buy garden engine oil from Halfords then follow your manual instructions for a mix
You would probably need a 250. But, choose a 4 stroke to start with unless your pretty familiar with a dirtbike, in which case you could get a 2 stroke.
No.
Every Honda xr 80 ia a four-stroke, so no you don't need 2 cycle oil.
yea