520 pitch rear sprocket made in the USA of T6 7075 aluminum and made to fit Honda CR125M hubs with 10mm studs. These 10mm stud hubs were found on the late 1975-1978 CR125s. Sprockets available from 49T to 57T. Larger sizes may add a few dollars to the cost. Manufacturing will take about 10 days lead time as we do not stock the 520 conversion.
1975-1978 CR125 with 10mm stud rear hub