A smaller sprocket will give you higher gearing for higher top speed and lower torque, and a larger sprocket will increase your torque at a slight reduction in top speed.

Note that changing from the stock sprocket size will require a resizing of your chain or chain replacement. Below you will see a guide on what size of chain you will need for your new sprocket. You can either resize the chain with a masterlink or you will need a new chain with the appropriate length. For a $10 upcharge we will provide a masterlink and the appropriate piece of chain you will need to lengthen your chain. A 42 tooth sprocket will require you to take 2 links out. A bicycle or motorcycle chainbreaker will be required for this task.

We will offer a brand new o-ring chain for $18 to match your new sprocket in which case you will not need a chainbreaker and your installation will be much easier.

The following chart shows the size chain needed (in links) for the surron. if on checkout you go for the $18 chain option we will send you the appropriately sized chain.