NOS new some with shelf wear.. 7.0 Center opening, 4 Bolts at 7.6cm on center. Please check your sprocket dimensions and count your tooth sizes as they might have been replaced over time.
Please count your number of sprocket teeth, and check your bolt pattern distances and center opening
These sprockets are new and within +- 2 teeth of specified OEM sprocket sizes from Reputable Sprocket Charts. Smaller number of teeth give you faster acceleration. Larger number of teeth give you more top speed.