37T Rear Sprocket suitable for use with CZ100, Z50M, Z50A, Z50J1, Z50J, Z50R & Chinese CopiesCompatible with 420 chain Distance between fixing holes: 46. 5 mm (approximate) Centre hole diameter: 38 mm (approximate)
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37T Rear Sprocket suitable for use with CZ100, Z50M, Z50A, Z50J1, Z50J, Z50R & Chinese Copies