Please enter values above
How to use this calculator:
If you are changing your sprockets or adding a swingarm extension, you need to know how long the chain needs to be. Long or short chain, we got you covered.
1. Enter stock sprocket and chain length in the approriate fields. (If you don't know your sprocket or chain length, go to our application charts: www.drivenracing.com/downloads)
2. Enter the new sprocket size and swing arm extension in inches
3. The result will show up in the bottom