The Reflex uses the same internal pulleys as the Kyosho V1RR which turns out to be 2.53 for the internal drive ratio. I may be wrong about the stock pinions and spurs on the Reflex but if it's the same as 16T/20T pinions and 48T/44T spurs as the V1RR, then you're getting 7.58 for the 1st gear and 5.56 for the 2nd gear final drive ratios.