Rear sprockets to suit models using the three spoked mag wheels eg, R30.
Replacement 38 tooth rear sprocket to suit R30 mag wheels.
Replacement 40 tooth rear sprocket to suit R30 mag wheels.
Replacement 42 tooth rear sprocket to suit R30 mag wheels.

Replacement 44 tooth rear sprocket to suit R30 mag wheels.
Replacement 46 tooth rear sprocket to suit R30 mag wheels.