How do I know what sprocket to use on my mini bike?

I want to increase my speed on my mini bike but don't really know what sprocket is best anyone got any tips? I am mainly on the road with it and it is a 6.5 hp gas engine.|||roost66 is half right, you need a bigger sprocket, on the FRONT on the engine not the back. The alternative is to put a smaller sprocket on the back on the wheel. Engine sprockets are usually less expensive because they're smaller.





You need to calculate the final drive ratio, this is the number of teeth on the rear sprocket divided by the number of teeth on the front sprocket. Ratio =(back/front) To find out what will happen by adding teeth to the front change the number in your calculation. You don't want to change/lower your final drive ratio by more than about 0.5 with the small engine you have or it won't climb hills vary well. You can do the same calculation by changing the number of teeth on the rear sprocket.





Example





Stock Sprockets Front 13 Back 46 Ratio=(46/13)= 3.54





Bigger Front Sprocket 14 Ratio=(46/14)= 3.28





I hope this helps.|||bigger the sprocket on the back more top speed you get but you also loose acceleration.....count how many teeth are on the spocket and then go to your bike shop and get one with a few more take your old one with you to ensure you get the right pitch


cheeers happy riding