Does anyone know of a company that makes custom race numbers for mountain biking races that are larger than the traditional 7 1/2" x 6" number plates? I'm looking for a number plate that can handle a transponder for chip timing. The transponders would work fine on a plate that is at least 8" x 6".
I've always used Rainbow Racing Systems number plates, but their permafiber is limited to only 7 1/2" x 6".
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