Minor riders - be sure to submit your AMA Minor Release card to secretary@rmra.racing!

Micro Shaft Drive 4-8 yrs & Mini E-Bike 4-8 yrs do not require transponders.  For only those two classes, please select "I will be renting a transponder" but do not use the rental link to rent one.

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Online Registration for
Transponder Rental - Douglas County SX Round 4
Expired:  Saturday, September 12, 2026
Registration will be open at the venue on the day of the event.