Dirt Bike Gear Ratio Calculator

Number of Teeth on Front Sprocket: Number of Teeth on Rear Sprocket: Resulting Gear Ratio:

Gear	Front Sprocket Teeth	Rear Sprocket Teeth	Gear Ratio
1st	13	50	3.85
2nd	13	45	3.46
3rd	13	40	3.08
4th	13	36	2.77
5th	13	32	2.46