I don't know what the teeth size and length are but I used these
http://www.beltingonline.com/3mm-htd-timing-belts-4573 for a few Yokomo YZ 10 belts
All lazer belts are M3
And front belt is 537 mm long and have 179 teeth 3,5 mm wide
rear belt is 177 mm long have 59 teeth and are 4 mm wide.
mvh isobarik
taken from
http://radiocontrolzone.com/showthre...=94239&page=54
They have them in stock and will do custom widths