In BMX bikes there isn't much to choose from, they almost all use 20" wheels, which means that there isn't much difference in frame size. Since they're mostly ridden out of the saddle it isn't much of a problem either.
Around 150- 175. 125 at minimum.
Yamaha IT 125, 175.
Extensive research has shown that there is surprisingly little difference in rider performance between different crank lengths. The most common crank size is 175 mm, and unless you hve a specific issue with thet there is very little to gain by swapping it out. Or are you actually asking about suggestions for crank/chain ring sizes - tooth counts?
Honda civic 1997 comes out with 175/65r14 size 14inch wheels Honda civic 1997 comes out with 175/65r14 size 14inch wheels
175/65-r14t
175/70r/13
175/70R14 is stock size for the stand neon
BB's are all the same size .175 for all the BB guns.
175/70r13
175/65R14
175/65/14
175/150