The KX100 is faster, but only by 10mph.
Crf150r is faster with a top speed around 72mph, vs. 55-60mph for the kx100, depending on rider weight/etc.
The KTM 85 is faster but much more difficult to take care of.
YES
i have got a kx100 and that beat a ktm125 of the line kx100 80mph ktm125 95mph
no it is not
lots: kowasaki: kx65, kx85 kx100, kx250. yamaha: pw50, yz85, yz125, yz250. ktm: 50sx, 65sx, 85sx, 105sx, 125sx, 150sx, 250sx, 320sx. suzuki: jr50, jr80, rm65, rm85, rm125, rm250 honda: cr85, cr125, cr250 and much more
30 hp
65-70
no
Yes, a 2001 kx100 engine fits in a 2001 kx100 frame like it was made for it
.5 L
stock gearing 60 mph