People are always talking about how dirt bikes have top end and low end. What does that mean? Please help? :)
low end is how the bike performs in lower rpm's, and high end is how it is in the higher rmp's. sometimes a bike can be boggy when accelerating (low end) but then kick into some power & fly when in the higher rpm's.
They're referring to the rpm range. Lower end being where 4-stroke bikes have more torque.. Or higher end where 2-strokes usually have the upper hand, usually called the power-band.