Solo motocross bikes consist of engines ranging from anywhere between 50cc to 550cc.
During the sport's infancy, a 500cc class would have been the premier division.
Technological advancement, however, resulted in more powerful open class
motocross bikes with riders unable to ride them at their limits.
Technology also resulted in increased speed and maneuverability of 250cc
leading to them superceding the old 500cc bikes as the first choice amongst
Motocross bikes are distinguished by their engines i.e. whether they
are two-stroke or four-stroke models. While bikes were originally built
with four-stroke engines, two-stroke engines eventually dominated the motocross
scene in the later years due to their increased power.
Additional improvements in technology would see the introduction of features
such as water cooling systems and monoshock rear suspension systems which replaced the
old air cooled, twin shock rear suspension models and further increased its
Due to the nature of motocross which typically involve big jumps at high speeds over
rugged terrain, motocross bikes require significant suspension to facilitate such
extreme stunts and conditions. In fact, the advances in suspension technology
are largely responsible for the state of the sport today as without which
the numerous thrilling jumps seen today would otherwise be impossible.
To minimize weight which should ideally be as low as 200 to 250 lbs, additional
accessories such as lights, electric starters, speedometers and kickstands are
not included in the construction of a motocross bike. In addition, aluminum
and magnesium, which are low in weight, are generally used.
Motocross riders spend most of their time standing which allows them to absorb
any impact or shock with their knees. The bike's elongated seat does not
provide much in the way of comfort but allows riders to shift weight
quickly while providing additional traction around corners.
Surprising to some is the fact that motocross bikes in conditions that are ready to race
can be readily purchased. Experienced riders, however, prefer to make custom modifications
to their bike for purposes ranging from performance reasons to tuning the bike according
to their own personal preference.
Freestyle Motocross Bikes
Freestyle motocross bikes are typically modified specifically for FMX purposes
which generally gives them a look distinguishable from standard motocross bikes.
Seats are sometimes shaved down to allow for a wider range of movement while rear fenders
are usually cut to prevent them from getting in the way when doing tricks. In
extreme cases, handles are strategically attached to various places on the bike
to grab onto while doing tricks.