12 TOOTH 420 PIT BIKE FRONT SPROCKET 17mm CENTRE fits 150cc 160cc PITBIKES. 12 TOOTH 420 PIT BIKE FRONT SPROCKET 17mm CENTRE fits 125cc 140cc PITBIKES. 12 TOOTH 420 PIT BIKE FRONT SPROCKET 17mm CENTRE fits 50cc 110cc PITBIKES.
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