Diameter Pulley: 7 1/4 ", Heavy Duty "FatBoy Series" Upgrade, ID: 1 ", Uses belt width: 1/2 " or 5/8", Replaceable Pulley Bearing, Cool Coil Technology, Super Smooth "Xtreme Precision" Machined Pulley, Upgraded to 3 Layer "Xtreme TOUGH" Integrated, Water Tight Wire Harness
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