Sprockets, sprockets, sprockets.

[ChipBeck_imp]

The factory rear sprocket is steel and quite durable. Most aftermarket rear sprockets are aluminum and wear out much faster. Aftermarket front sprockets are usually steel but they will not have the thick rubber armor that your stock front has. If you are not changing gearing, stay with stock parts. I have 3 front and 3 rear sprockets. To get a quality steel aftermarket rear sprocket that will last like the stock unit it will be about the same price as the stock unit. There is no aftermarket front sprocket that is built like the stock unit. Cheers.

Chip