With my team we want to use sprockets, but also want to have a ratio geared for torque is there such a thing as sprocket ratios?

Yes. Fundamentally, they work the same way gear ratios do.

For a given speed of chain movement,

- A smaller sprocket will turn faster but with less torque
- A larger sprocket will turn slower but with more torque

Additionally, you can use the number of teeth to calculate gear ratios for sprocket systems the same way as you calculate gear ratios for gear systems.