2012 FIM Technical Rules Motocross

82.04 Open transmission guards
Snowmobiles must be equipped with belt guards. The guards must be separate
from the cowl configuration.
82.05 Exhaust pipes
82.05.2 Exhaust fumes must not discharge in a manner as to raise snow,
foul the tracks or brakes, or inconvenience a passenger, if there is one, or any
other riders. All possible measures must be taken to prevent the possible loss of
waste oil so that it does not inconvenience a following rider.
82.06 Handlebars
The width of the handlebars is: not less than 500 mm and not more than 850 mm.
No extensions are permitted.
82.07 Control levers
Compulsory. Article 01.35 is applicable.
82.08 Throttle controls
Compulsory. Article 01.37 is applicable. Ball ends are not obligatory.
82.09 Footrests (See Article 01.39)
If snowmobile footrests are equipped with loops, the footrest must have a stopper
which would prevent the riders foot entering by more than 1/3 of its length.
82.10 Brakes
There must be at least one brake.
82.11 Snow Flaps
Snowmobiles must be equipped with snow flaps at the rear. They must be made of
an adequate material. There must be at least 30 mm overlap on each side of the
machine tunnel and a maximum of 100 mm ground clearance when the machine
is unloaded. The use of springs and/or elastic material to hold down the snow flaps
is forbidden. (See diagram M.)
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