Genuine American Comet 30 Series 16mm Driven Pulley x 6" Outer Diameter. Made in the USA. American Upgrade and Replacement for the Imported Metric 16mm Pulleys on American Sportworks Go Karts and many other brands. Fits on a 16mm "Step Down" Jackshaft. Replaces the Silver, 16mm Asymmetric 30 Series Style Chinese Clones that use a 3/4" Top Width Belt, that's Flat on the Engine Side.

  
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