Any 20inch forks will fit.
BMX bikes all have the same size (20") wheels, so they're very similar in size. Doesn't matter that much as they are mainly ridden standing up anyhow.
That's a BMX, and there's not a lot of difference between forks for those. AS long as you get the correct steerer tube length, any BMx fork would give you a rideable bike.
Yes.
The standard BMX axle nut size for most BMX bikes is 3/8 inch.
The standard size of BMX axle nuts is typically 3/8 inch.
The standard thread size for BMX pedal installation is 9/16 inch.
The forks go through the head tube and headset, the stem anchors the fork and then the bars attach to the stem, so the answer is the fork and stem.
i am 14 going on 15, im 5''7' height and 9.5 stone in weight and i have an United Recruit RN1 2011 BMX which weighs 25.5 pounds, i am relatively strong for my size, not MEGA strong but slightly stronger then average and my BMX is perfect (FOR ME) ^_^* but remember it all depends on your size ,weight and strength! E.g. Weak Guy + Lighter BMX = BETTER :) Hope This Helps!
the fork gyro (if have) and stem and mostly important the headset
That is very light for a bmx, 25lbs is average
Bmx's don't come in sizes. They are all one size.