TECHNICAL RULES MOTOCROSS (INCLUDING RULES FOR ... - FIM

Junior MX (65/85) 2 metre max method
With 2 stroke engines:
Checks before the race:
Checks after the race:
For 150 cc - 4 stroke
engines:
Checks before the race:
Checks after the race:
109 dB/A
111 dB/A
112 dB/A
112 dB/A
114 dB/A
115 dB/A
48
Target
109 dB/A + 2 dB/A for the precision
of the method
111 dB/A + 1 dB/A for degradation
of the silencer.
Target
112 dB/A + 2 dB/A for the precision
of the method
114 dB/A + 1 dB/A for degradation
of the silencer.
Supermoto 2 metre max method
For all engine types:
All checks before the race:
All checks after the race:
115 dB/A
117 dB/A
118 dB/A
Target
115 dB/A + 2 dB/A for the
precision of the method.
117 dB/A+ 1 dB/A for degradation
of the silencer.
Snowcross 2 metre max method
For all engine types :
All checks before the race
All checks after the race:
100 dB/A
102 dB/A
103 dB/A
Target: 100 dB/A
100 dB/A + 2 dB/A
for the precision of the method
102 dB/A + 1 dB/A for degradation
of the silencer
Quads 2 metre max method
With 2 stroke engines
All checks before the race:
All checks after the race:
112 dB/A
114 dB/A
115 dB/A
Target: 112 dB/A
112 dB/A + 2 dB/A
for the precision of the method
114 dB/A + 1 dB/A for degradation
of the silencer