Honda CMX250C REBEL 2007 Owner's Manual page 177

Specifications
Power Transmission
primary reduction
final reduction
gear ratio, 1st
2nd
3rd
4th
5th
standard
sprocket sizes
final drive
168
Technical Information
3.631
2.357
2.846
1.777
1.333
1.083
0.913
drive (engine) sprocket:
driven (rear wheel) sprocket:
chain
DID520VC.5 or RK520MOZ9
14 teeth
33 teeth