The number of teeth has changed over time so be sure what combination you want before you order. Also be sure a cheaper kit has a steel rear sprocket and not an aluminum one. Quality of the chain could be an issue too. As I posted before ,I like the stock kit from Triumph. (I run 16 front and 42 rear but that is the stock SM gearing from 04)

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!