2012 FIM Technical Rules Motocross
2012 FIM Technical Rules Motocross
2012 FIM Technical Rules Motocross
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43.04<br />
The rear mudguard measure described in the figure must not be exceed 130mm at<br />
the most extended positions of the front and the rear suspension, at full extension<br />
(see diagram L).<br />
43.05<br />
The ends of the mudguards must be rounded. The radius must be at least 3 mm.<br />
Mudguards must be made of flexible materials only (i.e. plastic).<br />
43.07<br />
If cast or welded wheels are used, a protection must be provided by enclosing the<br />
spokes with solid discs. Any open area between the outer edge of the solid disc<br />
and the wheel rim shall be maximum 10 mm (tyre inflation valve excepted).<br />
01.45 STREAMLINING<br />
For the main article, refer to the same number in the General section.<br />
01.46 SUSPENSION<br />
Electronically controlled suspension systems may not be used.<br />
01.47 WHEELS, RIMS, TYRES<br />
47.03 Restrictions for wheel (rim) dimensions<br />
Capacity<br />
Maximum front wheel<br />
(rim) size<br />
Maximum rear wheel<br />
(rim) size<br />
65cc 14 inch 12 inch<br />
85cc SW<br />
(small wheels)<br />
17 inch 14 inch<br />
85cc LW<br />
(large wheels)<br />
19 inch 16 inch<br />
125cc and up 21 inch 19 inch<br />
60<br />
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