Sunstar
Sunstar front and rear motorcycle sprockets in 420 to 530 pitch. The rear sprockets are steel, and every name shows the tooth count.
Sunstar makes sense when you replace front and rear together, as both are here. A code such as SUNR1-3565-48 ends in the tooth count.
Changing the gearing
A smaller front or larger rear sprocket gives quicker acceleration; the opposite brings lower revs on the highway. A change in sprocket size can also change the chain length you need.