Depending on the length of his/her inner leg is depending what size bike he/she can fit on but the majority of 12 year olds ride a 85 (small wheel or big wheel depending on the length of the riders inner leg)
Depends on the size of the bike. The size of the bike doesn't necessarily pertain to the cc of the engine... But in general people 5.7'' - 6.1" fit on about any bike.
I would say around a 15" size frame.
Depends on the engine size of the monkey bike - 50cc, 70cc, 90cc or 110cc.
About 21inch top tube
The dimensions of the tire is written on the sidewall of the tire. Make a note of these, then just buy an inner tube with the same dimension. You can go a bit narrower than recommended but the wheel diameter needs to be of the right size.
63cm or 65cm. Raise your seatpost.
If you bought a new complete bike (not just the frame) you can look at the sidewall of the tires to find out what size you'll need. Many bike manufacturers also list tire requirements online.
im pretty sure 14mm i have the same bike
NGK BPM7A is the one you will need
i do not know the size but the ampage is 10-25 amps
To find a replacement chain for my pocket bike, I need to know what to measure.