01 / RATIO
What is final drive?
Rear sprocket teeth divided by front sprocket teeth. A larger number means the engine turns more for each wheel revolution.
Motorcycle tools
Motorcycle sprocket calculator
Compare your current setup with a gearing change.
FIELD NOTE 001 / FINAL DRIVE
REAR SPROCKET+2 teeth
Final drive comparison
Enter your current and proposed sprockets.
Current setup
teeth
teeth
New setup
teeth
teeth
Change any value to update results
Final drive ratio change
+4.65%
Shorter gearing · more wheel torque
OLD RATIO3.071
→NEW RATIO3.214
RPM at same road speed+4.65%higher
Speed at same RPM−4.44%lower
A higher final drive ratio means shorter gearing: more RPM at a given road speed. These are theoretical gearing comparisons, not a prediction of actual top speed.
Reading the result
02 / FEEL
Shorter gearing
A higher ratio can improve response and acceleration feel, while increasing cruising RPM and reducing speed at a given RPM.
03 / CHECK
Fitment still matters
Before changing sprockets, verify chain length, adjustment range, clearance, and your motorcycle manufacturer's guidance.